Mercurial > urweb
comparison lib/js/urweb.js @ 829:20fe00fd81da
Substring functions; fix a nasty MonoReduce pattern match substitution bug
author | Adam Chlipala <adamc@hcoop.net> |
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date | Sat, 30 May 2009 13:29:00 -0400 |
parents | 14a6c0971d89 |
children | 5e1a4b12c83a |
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828:14a6c0971d89 | 829:20fe00fd81da |
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351 function bs(b) { return (b ? "True" : "False") } | 351 function bs(b) { return (b ? "True" : "False") } |
352 | 352 |
353 function sub(s, i) { return s[i]; } | 353 function sub(s, i) { return s[i]; } |
354 function suf(s, i) { return s.substring(i); } | 354 function suf(s, i) { return s.substring(i); } |
355 function slen(s) { return s.length; } | 355 function slen(s) { return s.length; } |
356 function sidx(s, ch) { | |
357 var r = s.indexOf(ch); | |
358 if (r == -1) | |
359 return null; | |
360 else | |
361 return r; | |
362 } | |
363 function schr(s, ch) { | |
364 var r = s.indexOf(ch); | |
365 if (r == -1) | |
366 return null; | |
367 else | |
368 return s.substring(r); | |
369 } | |
370 function ssub(s, start, len) { | |
371 return s.substring(start, start+len); | |
372 } | |
356 | 373 |
357 function pi(s) { | 374 function pi(s) { |
358 var r = parseInt(s); | 375 var r = parseInt(s); |
359 if (r.toString() == s) | 376 if (r.toString() == s) |
360 return r; | 377 return r; |