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comparison lib/ur/string.ur @ 1272:56bd4a4f6e66

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Some serious bug-fix work to get HTML example to compile; this includes fixing a bug with 'val' patterns in Unnest and the need for more local reduction in Especialize
author Adam Chlipala <adamc@hcoop.net>
date Thu, 03 Jun 2010 13:04:37 -0400
parents 9df124fcab3d
children f0afe61a6f8b
comparison
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1271:503d4ec93494 1272:56bd4a4f6e66
9 val suffix = Basis.strsuffix 9 val suffix = Basis.strsuffix
10 10
11 val index = Basis.strindex 11 val index = Basis.strindex
12 val atFirst = Basis.strchr 12 val atFirst = Basis.strchr
13 13
14 fun mindex {Haystack = s, Needle = chs} = Basis.strcspn s chs 14 fun mindex {Haystack = s, Needle = chs} =
15 let
16 val n = Basis.strcspn s chs
17 in
18 if n >= length s then
19 None
20 else
21 Some n
22 end
15 23
16 fun substring s {Start = start, Len = len} = Basis.substring s start len 24 fun substring s {Start = start, Len = len} = Basis.substring s start len
17 25
18 fun split s ch = 26 fun split s ch =
19 case index s ch of 27 case index s ch of