1 ## our_shell: ysh
2 ## oils_failures_allowed: 1
3
4 #### For loop over expression: List
5 var mylist = [1, 2, 3]
6 for item in (mylist) {
7 echo "item $item"
8 }
9
10 ## STDOUT:
11 item 1
12 item 2
13 item 3
14 ## END
15
16 #### For loop over expression: Dict, not BashAssoc
17
18 var mydict = {name: 'bob', age: 40}
19 for key in (mydict) {
20 echo "key $key"
21 }
22
23 declare -A A=([name]=bob)
24 for key in (A) {
25 echo "key $key"
26 }
27
28 ## status: 3
29 ## STDOUT:
30 key name
31 key age
32 ## END
33
34
35 #### For loop over expression: range (low priority)
36 var myrange = 0:3
37 for i in (myrange) {
38 echo "i $key"
39 }
40
41 ## STDOUT:
42 i 0
43 i 1
44 i 2
45 ## END
46
47 #### Shell for loop with index (equivalent of enumerate())
48 for i, item in a b c {
49 echo "$i $item"
50 }
51 ## STDOUT:
52 0 a
53 1 b
54 2 c
55 ## END
56
57 #### 3 indices with (mylist) is a runtime error
58 for i, item bad in (['foo', 'bar']) {
59 echo "$i $item $bad"
60 }
61 ## status: 2
62
63 #### Shell for loop can't have 3 indices
64 for i, bad, bad in a b c {
65 echo $i $item
66 }
67 ## status: 2
68
69 #### Any for loop can't have 4 indiecs
70 for a, b, c, d in (['foo']) {
71 echo $i $item
72 }
73 ## status: 2
74
75 #### Expression for loop with index: List
76 for i, item in (['spam', 'eggs']) {
77 echo "$i $item"
78 }
79 ## STDOUT:
80 0 spam
81 1 eggs
82 ## END
83
84 #### Expression for loop with index: Dict (TODO: define dict iter order)
85 for key, value in ({name: 'bob', age: 40}) {
86 echo "pair $key $value"
87 }
88 ## STDOUT:
89 pair name bob
90 pair age 40
91 ## END
92
93 #### Dict: index key value loop (TODO: define dict iter order)
94 for i, key, value in ({name: 'bob', age: 40}) {
95 echo "entry $i $key $value"
96 }
97 ## STDOUT:
98 entry 0 name bob
99 entry 1 age 40
100 ## END
101
102
103 #### Equivalent of zip()
104
105 var array = :| d e f |
106
107 for i, item in a b c {
108 echo "$i $item $[array[i]]"
109 }
110
111 ## STDOUT:
112 0 a d
113 1 b e
114 2 c f
115 ## END
116
117 #### parse_bare_word eliminates confusion
118
119 shopt --unset parse_bare_word
120
121 for x in mylist { # THIS FAILS
122 echo "BAD $x"
123 }
124
125 ## status: 2
126 ## STDOUT:
127 ## END
128
129
130 #### Object that's not iterable
131
132 echo hi
133 for x in (42) {
134 echo $x
135 }
136
137 ## status: 3
138 ## STDOUT:
139 hi
140 ## END
141
142 #### Oil for with brace substitution and glob
143
144 touch {foo,bar}.py
145 for i, file in *.py {README,foo}.md {
146 echo "$i $file"
147 }
148 ## STDOUT:
149 0 bar.py
150 1 foo.py
151 2 README.md
152 3 foo.md
153 ## END