Category talk:Wren-str: Difference between revisions
Content added Content deleted
(Fixed minor bug in Greek.names property and added Str.splitNoEmpty method.) |
(→Source code: Added more versatile Str.replace and minor edit to Str.exchange method.) |
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if (i == j) return s |
if (i == j) return s |
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var chars = s.toList |
var chars = s.toList |
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chars.swap(i, j) |
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| ⚫ | |||
| ⚫ | |||
return Strs.concat(chars) |
return Strs.concat(chars) |
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} |
} |
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// Returns 's' with 'from' replaced by 'to' up to 'n' times (all times if n is negative) |
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// but skipping the first 'skip' matches. |
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static replace(s, from, to, n, skip) { |
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if (!(from is String)) Fiber.abort("'from 'must be a string.") |
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if (!(to is String)) Fiber.abort("'to' must be a string.") |
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if (!(n is Num && n.isInteger)) Fiber.abort("'n' must be an integer.") |
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if (!(skip is Num && skip.isInteger && skip >= 0)) { |
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Fiber.abort("'skip' must be a non-negative integer.") |
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} |
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if (!(s is String)) s = "%(s)" |
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if (n < 0) { |
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if (skip == 0) return s.replace(from, to) |
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n = Num.maxSafeInteger |
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} |
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if (n == 0 || skip >= n) return s |
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var split = s.split(from) |
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for (i in 0...split.count-1) { |
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count = count + 1 |
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res = res + split[i] + ((count <= skip || count > n) ? from : to) |
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} |
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return res + split[-1] |
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} |
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// Convenience version of 'replace' where 'skip' is always zero. |
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static replace(s, from, to, n) { replace(s, from, to, n, 0) } |
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// Returns 's' repeated 'reps' times. |
// Returns 's' repeated 'reps' times. |
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