1
2	#### tuple comparison
3	var t1 = 3, 0
4	var t2 = 4, 0
5	var t3 = 3, 1
6
7	if (t2 > t1) { echo yes1 }
8	if (t3 > t1) { echo yes2 }
9	if ( (0,0) > t1) { echo yes3 }
10
11	# NOTE: ((0,0) causes problems -- it looks like a shell statement!
12	#if ( (0,0) > t1) { echo yes3 }
13	## STDOUT:
14	yes1
15	yes2
16	## END
17
18
19	#### tuple literal doesn't conflict with ((
20	if ((0,0) < (0,1)) { echo yes }
21	## STDOUT:
22	yes
23	## END
24
25	#### Empty tuple
26	var t = ()
27	echo length=$len(t)
28	## STDOUT:
29	length=0
30	## END
31
32	#### Singleton tuple
33	var t = tup(42)
34	echo "length = $[len(t)]"
35	echo "t[0] = $[t[0]]"
36
37	# NOT ALLOWED. Use tup() instead.
38	#var t1 = 1,
39	var t2 = (1,)
40	## status: 2
41	## STDOUT:
42	length = 1
43	t[0] = 42
44	## END