Mercurial > urweb
comparison lib/ur/string.ur @ 1057:eaba663fd6aa
Represent FFI function names as strings, to deal with cross-file recursion
author | Adam Chlipala <adamc@hcoop.net> |
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date | Sat, 05 Dec 2009 14:01:34 -0500 |
parents | e46227efcbba |
children | 85d194409b17 |
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1056:c42bfbd75ca9 | 1057:eaba663fd6aa |
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24 case mindex {Haystack = s, Needle = chs} of | 24 case mindex {Haystack = s, Needle = chs} of |
25 None => None | 25 None => None |
26 | Some i => Some (substring s {Start = 0, Len = i}, | 26 | Some i => Some (substring s {Start = 0, Len = i}, |
27 sub s i, | 27 sub s i, |
28 substring s {Start = i + 1, Len = length s - i - 1}) | 28 substring s {Start = i + 1, Len = length s - i - 1}) |
29 | |
30 fun all f s = | |
31 let | |
32 val len = length s | |
33 | |
34 fun al i = | |
35 i >= len | |
36 || (f (sub s i) && al (i + 1)) | |
37 in | |
38 al 0 | |
39 end |