| 1 | # spec/ysh-methods
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| 2 |
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| 3 | ## our_shell: ysh
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| 4 | ## oils_failures_allowed: 2
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| 5 |
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| 6 | #### => operator for pure computation is allowed (may be mandatory later)
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| 7 |
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| 8 | # later we may make it mandatory
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| 9 |
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| 10 | if ("abc" => startsWith("a")) {
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| 11 | echo yes
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| 12 | }
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| 13 |
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| 14 | var mylist = [1, 2, 3]
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| 15 |
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| 16 | # This one should be ->
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| 17 | call mylist->pop()
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| 18 | echo 'ok'
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| 19 |
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| 20 | ## STDOUT:
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| 21 | yes
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| 22 | ok
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| 23 | ## END
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| 24 |
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| 25 | #### => can be used to chain free functions
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| 26 |
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| 27 | func dictfunc() {
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| 28 | return ({k1: 'spam', k2: 'eggs'})
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| 29 | }
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| 30 |
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| 31 | echo $[list(dictfunc()) => join('/') => upper()]
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| 32 |
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| 33 | # This is nicer and more consistent
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| 34 | echo $[dictfunc() => list() => join('/') => upper()]
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| 35 |
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| 36 | ## STDOUT:
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| 37 | K1/K2
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| 38 | K1/K2
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| 39 | ## END
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| 40 |
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| 41 | #### Str => startsWith(Str) and endsWith(Str), simple
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| 42 | func test(s, p) { echo $[s => startsWith(p)] $[s => endsWith(p)] }
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| 43 |
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| 44 | call test('', '')
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| 45 | call test('abc', '')
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| 46 | call test('abc', 'a')
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| 47 | call test('abc', 'b')
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| 48 | call test('abc', 'c')
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| 49 | call test('abc', 'z')
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| 50 | call test('', 'abc')
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| 51 | ## status: 0
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| 52 | ## STDOUT:
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| 53 | true true
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| 54 | true true
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| 55 | true false
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| 56 | false false
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| 57 | false true
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| 58 | false false
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| 59 | false false
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| 60 | ## END
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| 61 |
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| 62 | #### Str => startsWith(Str) and endsWith(Str), matches bytes not runes
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| 63 | func test(s, p) { echo $[s => startsWith(p)] $[s => endsWith(p)] }
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| 64 |
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| 65 | call test(b'\yce\ya3', u'\u{03a3}')
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| 66 | call test(b'\yce\ya3', b'\yce')
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| 67 | call test(b'\yce\ya3', b'\ya3')
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| 68 | call test(b'\yce', b'\yce')
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| 69 | ## status: 0
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| 70 | ## STDOUT:
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| 71 | true true
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| 72 | true false
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| 73 | false true
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| 74 | true true
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| 75 | ## END
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| 76 |
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| 77 | #### Str => startsWith(Str) and endsWith(Str), eggex
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| 78 | func test(s, p) { echo $[s => startsWith(p)] $[s => endsWith(p)] }
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| 79 |
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| 80 | call test('abc', / d+ /)
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| 81 | call test('abc', / [ a b c ] /)
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| 82 | call test('abc', / 'abc' /)
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| 83 | call test('cba', / d+ /)
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| 84 | call test('cba', / [ a b c ] /)
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| 85 | call test('cba', / 'abc' /)
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| 86 | ## status: 0
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| 87 | ## STDOUT:
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| 88 | false false
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| 89 | true true
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| 90 | true true
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| 91 | false false
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| 92 | true true
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| 93 | false false
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| 94 | ## END
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| 95 |
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| 96 | #### Str => startsWith(Str) and endsWith(Str), eggex with anchors
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| 97 | func test(s, p) { echo $[s => startsWith(p)] $[s => endsWith(p)] }
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| 98 |
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| 99 | call test('ab', / %start 'a' /)
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| 100 | call test('ab', / 'a' %end /)
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| 101 | call test('ab', / %start 'a' %end /)
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| 102 | call test('ab', / %start 'b' /)
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| 103 | call test('ab', / 'b' %end /)
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| 104 | call test('ab', / %start 'b' %end /)
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| 105 | ## status: 0
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| 106 | ## STDOUT:
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| 107 | true false
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| 108 | false false
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| 109 | false false
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| 110 | false false
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| 111 | false true
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| 112 | false false
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| 113 | ## END
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| 114 |
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| 115 | #### Str => startsWith(Str) and endsWith(Str), eggex matches bytes not runes
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| 116 | func test(s, p) { echo $[s => startsWith(p)] $[s => endsWith(p)] }
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| 117 |
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| 118 | call test(u'\u{03a3}', / dot /)
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| 119 | call test(u'\u{03a3}', / ![z] /)
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| 120 | call test(b'\yce', / dot /) # Fails: eggex does not match bytes
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| 121 | call test(b'\yce', / ![z] /) # Fails: eggex does not match bytes
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| 122 | ## status: 0
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| 123 | ## STDOUT:
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| 124 | true true
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| 125 | true true
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| 126 | true true
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| 127 | true true
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| 128 | ## END
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| 129 |
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| 130 | #### Str => startsWith(), no args
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| 131 | = 'abc' => startsWith()
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| 132 | ## status: 3
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| 133 |
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| 134 | #### Str => startsWith(), too many args
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| 135 | = 'abc' => startsWith('extra', 'arg')
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| 136 | ## status: 3
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| 137 |
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| 138 | #### Str => endsWith(), no args
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| 139 | = 'abc' => endsWith()
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| 140 | ## status: 3
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| 141 |
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| 142 | #### Str => endsWith(), too many args
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| 143 | = 'abc' => endsWith('extra', 'arg')
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| 144 | ## status: 3
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| 145 |
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| 146 | #### Str => trim*() with no args trims whitespace
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| 147 | func test(s) { write --sep ', ' --j8 $[s => trimStart()] $[s => trimEnd()] $[s => trim()] }
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| 148 |
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| 149 | call test("")
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| 150 | call test(" ")
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| 151 | call test("mystr")
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| 152 | call test(" mystr")
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| 153 | call test("mystr ")
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| 154 | call test(" mystr ")
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| 155 | call test(" my str ")
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| 156 | ## status: 0
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| 157 | ## STDOUT:
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| 158 | "", "", ""
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| 159 | "", "", ""
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| 160 | "mystr", "mystr", "mystr"
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| 161 | "mystr", " mystr", "mystr"
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| 162 | "mystr ", "mystr", "mystr"
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| 163 | "mystr ", " mystr", "mystr"
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| 164 | "my str ", " my str", "my str"
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| 165 | ## END
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| 166 |
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| 167 | #### Str => trim*() with a simple string pattern trims pattern
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| 168 | func test(s, p) { write --sep ', ' --j8 $[s => trimStart(p)] $[s => trimEnd(p)] $[s => trim(p)] }
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| 169 |
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| 170 | call test('' , 'xyz')
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| 171 | call test(' ' , 'xyz')
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| 172 | call test('xy' , 'xyz')
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| 173 | call test('yz' , 'xyz')
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| 174 | call test('xyz' , 'xyz')
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| 175 | call test('xyzxyz' , 'xyz')
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| 176 | call test('xyzxyzxyz', 'xyz')
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| 177 | ## status: 0
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| 178 | ## STDOUT:
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| 179 | "", "", ""
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| 180 | " ", " ", " "
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| 181 | "xy", "xy", "xy"
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| 182 | "yz", "yz", "yz"
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| 183 | "", "", ""
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| 184 | "xyz", "xyz", ""
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| 185 | "xyzxyz", "xyzxyz", "xyz"
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| 186 | ## END
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| 187 |
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| 188 | #### Str => trim*() with a string pattern trims bytes not runes
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| 189 | func test(s, p) { write --sep ', ' --j8 $[s => trimStart(p)] $[s => trimEnd(p)] $[s => trim(p)] }
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| 190 |
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| 191 | call test(b'\yce\ya3', u'\u{03a3}')
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| 192 | call test(b'\yce\ya3', b'\yce')
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| 193 | call test(b'\yce\ya3', b'\ya3')
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| 194 | ## status: 0
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| 195 | ## STDOUT:
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| 196 | "", "", ""
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| 197 | b'\ya3', "Σ", b'\ya3'
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| 198 | "Σ", b'\yce', b'\yce'
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| 199 | ## END
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| 200 |
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| 201 | #### Str => trim*() with an eggex pattern trims pattern
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| 202 | func test(s, p) { write --sep ', ' --j8 $[s => trimStart(p)] $[s => trimEnd(p)] $[s => trim(p)] }
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| 203 |
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| 204 | call test('' , / 'xyz' /)
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| 205 | call test(' ' , / 'xyz' /)
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| 206 | call test('xy' , / 'xyz' /)
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| 207 | call test('yz' , / 'xyz' /)
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| 208 | call test('xyz' , / 'xyz' /)
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| 209 | call test('xyzxyz' , / 'xyz' /)
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| 210 | call test('xyzxyzxyz', / 'xyz' /)
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| 211 | call test('xyzabcxyz', / 'xyz' /)
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| 212 | call test('xyzabcxyz', / %start 'xyz' /)
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| 213 | call test('xyzabcxyz', / 'xyz' %end /)
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| 214 | call test('123abc123', / d+ /)
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| 215 | ## status: 0
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| 216 | ## STDOUT:
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| 217 | "", "", ""
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| 218 | " ", " ", " "
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| 219 | "xy", "xy", "xy"
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| 220 | "yz", "yz", "yz"
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| 221 | "", "", ""
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| 222 | "xyz", "xyz", ""
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| 223 | "xyzxyz", "xyzxyz", "xyz"
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| 224 | "abcxyz", "xyzabc", "abc"
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| 225 | "abcxyz", "xyzabcxyz", "abcxyz"
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| 226 | "xyzabcxyz", "xyzabc", "xyzabc"
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| 227 | "abc123", "123abc", "abc"
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| 228 | ## END
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| 229 |
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| 230 | #### Str => trim*() with an eggex pattern trims bytes not runes
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| 231 | func test(s, p) { write --sep ', ' --j8 $[s => trimStart(p)] $[s => trimEnd(p)] $[s => trim(p)] }
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| 232 |
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| 233 | call test(u'\u{03a3}', / dot /) # Fails: eggex does not match bytes, so entire rune is trimmed.
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| 234 | call test(u'\u{03a3}', / ![z] /) # Fails: eggex does not match bytes, so entire rune is trimmed.
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| 235 | call test(b'\yce', / dot /) # Fails: eggex does not match bytes, so nothing is trimmed.
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| 236 | call test(b'\yce', / ![z] /) # Fails: eggex does not match bytes, so nothing is trimmed.
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| 237 | ## status: 0
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| 238 | ## STDOUT:
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| 239 | b'\ya3', b'\yce', ""
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| 240 | b'\ya3', b'\yce', ""
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| 241 | "", "", ""
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| 242 | "", "", ""
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| 243 | ## END
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| 244 |
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| 245 | #### Str => trim(), too many args
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| 246 | = 'mystr' => trim('extra', 'args')
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| 247 | ## status: 3
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| 248 |
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| 249 | #### Str => trimStart(), too many args
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| 250 | = 'mystr' => trimStart('extra', 'args')
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| 251 | ## status: 3
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| 252 |
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| 253 | #### Str => trimEnd(), too many args
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| 254 | = 'mystr' => trimEnd('extra', 'args')
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| 255 | ## status: 3
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| 256 |
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| 257 | #### Str => trim(), unicode whitespace aware
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| 258 |
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| 259 | # Supported set of whitespace characters. The full set of Unicode whitespace
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| 260 | # characters is not supported. See comments in the implementation.
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| 261 | var spaces = [
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| 262 | b'\u{0009}', # Horizontal tab (\t)
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| 263 | b'\u{000A}', # Newline (\n)
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| 264 | b'\u{000B}', # Vertical tab (\v)
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| 265 | b'\u{000C}', # Form feed (\f)
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| 266 | b'\u{000D}', # Carriage return (\r)
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| 267 | b'\u{0020}', # Normal space
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| 268 | b'\u{00A0}', # No-break space <NBSP>
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| 269 | b'\u{FEFF}', # Zero-width no-break space <ZWNBSP>
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| 270 | ] => join('')
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| 271 |
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| 272 | echo $["$spaces YSH $spaces" => trim()]
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| 273 | ## status: 0
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| 274 | ## STDOUT:
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| 275 | YSH
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| 276 | ## END
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| 277 |
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| 278 | #### Str => trim*(), unicode decoding errors
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| 279 | var badUtf = b'\yF9'
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| 280 |
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| 281 | echo trim
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| 282 |
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| 283 | # We only decode UTF until the first non-space char. So the bad UTF-8 is
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| 284 | # missed.
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| 285 | try { call " a$[badUtf]b " => trim() }
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| 286 | echo status=$_status
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| 287 |
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| 288 | # These require trim to decode the badUtf, so an error is raised
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| 289 | try { call "$[badUtf]b " => trim() }
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| 290 | echo status=$_status
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| 291 | try { call " a$[badUtf]" => trim() }
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| 292 | echo status=$_status
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| 293 |
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| 294 | # Similarly, trim{Left,Right} will assume correct encoding until shown
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| 295 | # otherwise.
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| 296 | echo trimStart
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| 297 | try { call " a$[badUtf]" => trimStart() }
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| 298 | echo status=$_status
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| 299 | try { call "$[badUtf]b " => trimStart() }
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| 300 | echo status=$_status
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| 301 |
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| 302 | echo trimEnd
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| 303 | try { call "$[badUtf]b " => trimEnd() }
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| 304 | echo status=$_status
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| 305 | try { call " a$[badUtf]" => trimEnd() }
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| 306 | echo status=$_status
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| 307 |
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| 308 | ## STDOUT:
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| 309 | trim
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| 310 | status=0
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| 311 | status=3
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| 312 | status=3
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| 313 | trimStart
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| 314 | status=0
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| 315 | status=3
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| 316 | trimEnd
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| 317 | status=0
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| 318 | status=3
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| 319 | ## END
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| 320 |
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| 321 | #### Str => trimStart(), unicode decoding error types
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| 322 | var badStrs = [
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| 323 | b'\yF4\yA2\yA4\yB0', # Too large of a codepoint
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| 324 | b'\yED\yBF\y80', # Surrogate
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| 325 | b'\yC1\y81', # Overlong
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| 326 | b'\y80', b'\yFF', # Does not match UTF8 bit pattern
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| 327 | ]
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| 328 |
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| 329 | for badStr in (badStrs) {
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| 330 | try { call badStr => trimStart() }
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| 331 | echo status=$_status
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| 332 | }
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| 333 |
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| 334 | ## STDOUT:
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| 335 | status=3
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| 336 | status=3
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| 337 | status=3
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| 338 | status=3
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| 339 | status=3
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| 340 | ## END
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| 341 |
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| 342 | #### Str => trimEnd(), unicode decoding error types
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| 343 | # Tests the backwards UTF-8 decoder
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| 344 | var badStrs = [
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| 345 | b'\yF4\yA2\yA4\yB0', # Too large of a codepoint
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| 346 | b'\yED\yBF\y80', # Surrogate
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| 347 | b'\yC1\y81', # Overlong
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| 348 | b'\y80', b'\yFF', # Does not match UTF8 bit pattern
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| 349 | ]
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| 350 |
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| 351 | for badStr in (badStrs) {
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| 352 | try { call badStr => trimEnd() }
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| 353 | echo status=$_status
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| 354 | }
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| 355 |
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| 356 | ## STDOUT:
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| 357 | status=3
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| 358 | status=3
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| 359 | status=3
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| 360 | status=3
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| 361 | status=3
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| 362 | ## END
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| 363 |
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| 364 | #### Str => trim*(), zero-codepoints are not NUL-terminators
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| 365 | json write (b' \y00 ' => trim())
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| 366 | json write (b' \y00 ' => trimStart())
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| 367 | json write (b' \y00 ' => trimEnd())
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| 368 | ## STDOUT:
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| 369 | "\u0000"
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| 370 | "\u0000 "
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| 371 | " \u0000"
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| 372 | ## END
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| 373 |
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| 374 | #### Dict => keys()
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| 375 | var en2fr = {}
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| 376 | setvar en2fr["hello"] = "bonjour"
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| 377 | setvar en2fr["friend"] = "ami"
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| 378 | setvar en2fr["cat"] = "chat"
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| 379 | pp test_ (en2fr => keys())
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| 380 | ## status: 0
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| 381 | ## STDOUT:
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| 382 | (List) ["hello","friend","cat"]
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| 383 | ## END
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| 384 |
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| 385 | #### Str => split(sep), non-empty sep
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| 386 | pp test_ ('a,b,c'.split(','))
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| 387 | pp test_ ('aa'.split('a'))
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| 388 | pp test_ ('a<>b<>c<d'.split('<>'))
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| 389 | pp test_ ('a;b;;c'.split(';'))
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| 390 | pp test_ (''.split('foo'))
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| 391 | ## STDOUT:
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| 392 | (List) ["a","b","c"]
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| 393 | (List) ["","",""]
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| 394 | (List) ["a","b","c<d"]
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| 395 | (List) ["a","b","","c"]
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| 396 | (List) []
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| 397 | ## END
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| 398 |
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| 399 | #### Str => split(sep, count), non-empty sep
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| 400 | pp test_ ('a,b,c'.split(',', count=-1))
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| 401 | pp test_ ('a,b,c'.split(',', count=-2)) # Any negative count means "ignore count"
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| 402 | pp test_ ('aa'.split('a', count=1))
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| 403 | pp test_ ('a<>b<>c<d'.split('<>', count=10))
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| 404 | pp test_ ('a;b;;c'.split(';', count=2))
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| 405 | pp test_ (''.split('foo', count=3))
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| 406 | pp test_ ('a,b,c'.split(',', count=0))
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| 407 | pp test_ (''.split(',', count=0))
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| 408 | ## STDOUT:
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| 409 | (List) ["a","b","c"]
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| 410 | (List) ["a","b","c"]
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| 411 | (List) ["","a"]
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| 412 | (List) ["a","b","c<d"]
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| 413 | (List) ["a","b",";c"]
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| 414 | (List) []
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| 415 | (List) ["a,b,c"]
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| 416 | (List) []
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| 417 | ## END
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| 418 |
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| 419 | #### Str => split(), usage errors
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| 420 | try { pp test_ ('abc'.split('')) } # Sep cannot be ""
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| 421 | echo status=$[_error.code]
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| 422 | try { pp test_ ('abc'.split()) } # Sep must be present
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| 423 | echo status=$[_error.code]
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| 424 | ## STDOUT:
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| 425 | status=3
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| 426 | status=3
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| 427 | ## END
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| 428 |
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| 429 | #### Str => split(), non-ascii
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| 430 | pp test_ ('🌞🌝🌞🌝🌞'.split('🌝'))
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| 431 | ## STDOUT:
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| 432 | (List) ["🌞","🌞","🌞"]
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| 433 | ## END
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| 434 |
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| 435 | #### Dict => values()
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| 436 | var en2fr = {}
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| 437 | setvar en2fr["hello"] = "bonjour"
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| 438 | setvar en2fr["friend"] = "ami"
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| 439 | setvar en2fr["cat"] = "chat"
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| 440 | pp test_ (en2fr => values())
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| 441 | ## status: 0
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| 442 | ## STDOUT:
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| 443 | (List) ["bonjour","ami","chat"]
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| 444 | ## END
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| 445 |
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| 446 | #### Dict -> erase()
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| 447 | var book = {title: "The Histories", author: "Herodotus"}
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| 448 | call book->erase("author")
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| 449 | pp test_ (book)
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| 450 | # confirm method is idempotent
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| 451 | call book->erase("author")
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| 452 | pp test_ (book)
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| 453 | ## status: 0
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| 454 | ## STDOUT:
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| 455 | (Dict) {"title":"The Histories"}
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| 456 | (Dict) {"title":"The Histories"}
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| 457 | ## END
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| 458 |
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| 459 | #### Dict -> get()
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| 460 | var book = {title: "Hitchhiker's Guide", published: 1979}
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| 461 | pp test_ (book => get("title", ""))
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| 462 | pp test_ (book => get("published", 0))
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| 463 | pp test_ (book => get("author", ""))
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| 464 | ## status: 0
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| 465 | ## STDOUT:
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| 466 | (Str) "Hitchhiker's Guide"
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| 467 | (Int) 1979
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| 468 | (Str) ""
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| 469 | ## END
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| 470 |
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| 471 | #### Separation of -> attr and () calling
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| 472 | const check = "abc" => startsWith
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| 473 | pp test_ (check("a"))
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| 474 | ## status: 0
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| 475 | ## STDOUT:
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| 476 | (Bool) true
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| 477 | ## END
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| 478 |
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| 479 | #### Bound methods, receiver value/reference semantics
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| 480 | var is_a_ref = { "foo": "bar" }
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| 481 | const f = is_a_ref => keys
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| 482 | pp test_ (f())
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| 483 | setvar is_a_ref["baz"] = 42
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| 484 | pp test_ (f())
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| 485 |
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| 486 | var is_a_val = "abc"
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| 487 | const g = is_a_val => startsWith
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| 488 | pp test_ (g("a"))
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| 489 | setvar is_a_val = "xyz"
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| 490 | pp test_ (g("a"))
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| 491 | ## status: 0
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| 492 | ## STDOUT:
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| 493 | (List) ["foo"]
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| 494 | (List) ["foo","baz"]
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| 495 | (Bool) true
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| 496 | (Bool) true
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| 497 | ## END
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| 498 |
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| 499 | #### List => indexOf()
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| 500 | var items = [1, '2', 3, { 'a': 5 }]
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| 501 |
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| 502 | json write (items => indexOf('a'))
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| 503 | json write (items => indexOf(1))
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| 504 | json write (items => indexOf('2'))
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| 505 | json write (items => indexOf({'a': 5}))
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| 506 | ## STDOUT:
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| 507 | -1
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| 508 | 0
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| 509 | 1
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| 510 | 3
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| 511 | ## END
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| 512 |
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| 513 | #### List => join()
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| 514 | var items = [1, 2, 3]
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| 515 |
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| 516 | json write (items => join()) # default separator is ''
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| 517 | json write (items => join(" ")) # explicit separator (can be any number or chars)
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| 518 | json write (items => join(", ")) # separator can be any number of chars
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| 519 |
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| 520 | try {
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| 521 | json write (items => join(1)) # separator must be a string
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| 522 | }
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| 523 | echo "failed with status $_status"
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| 524 | ## STDOUT:
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| 525 | "123"
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| 526 | "1 2 3"
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| 527 | "1, 2, 3"
|
| 528 | failed with status 3
|
| 529 | ## END
|
| 530 |
|
| 531 | #### List->reverse()
|
| 532 |
|
| 533 | var empty = []
|
| 534 |
|
| 535 | var a = [0]
|
| 536 | var b = [2, 1, 3]
|
| 537 | var c = :| hello world |
|
| 538 |
|
| 539 | call empty->reverse()
|
| 540 | call a->reverse()
|
| 541 | call b->reverse()
|
| 542 | call c->reverse()
|
| 543 |
|
| 544 | pp test_ (empty)
|
| 545 | pp test_ (a)
|
| 546 | pp test_ (b)
|
| 547 | pp test_ (c)
|
| 548 |
|
| 549 | ## STDOUT:
|
| 550 | (List) []
|
| 551 | (List) [0]
|
| 552 | (List) [3,1,2]
|
| 553 | (List) ["world","hello"]
|
| 554 | ## END
|
| 555 |
|
| 556 | #### List->reverse() from iterator
|
| 557 | var x = list(0 .. 3)
|
| 558 | call x->reverse()
|
| 559 | write @x
|
| 560 | ## STDOUT:
|
| 561 | 2
|
| 562 | 1
|
| 563 | 0
|
| 564 | ## END
|
| 565 |
|