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Category talk:Wren-str: Difference between revisions

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Category talk:Wren-str (view source)

Revision as of 13:41, 11 February 2022

816 bytes removed ,  2 years ago
→‎Source code: Replaced Str.repeat method with a much more efficient version.
(Added Str.fromBytes and Str.fromCodePoints methods. Removed type aliases which are no longer needed.)
(→‎Source code: Replaced Str.repeat method with a much more efficient version.)
Line 364:
chars[j] = t
return Strs.concat(chars)
}
 
// Private helper method for 'repeat'.
static repeat_(s, reps) {▼
var rs = ""▼
for (i in 0...reps) rs = rs + s▼
return rs
}
 
// Returns 's' repeated 'reps' times.
▲ static repeat_repeat(s, reps) {
// If 'chunkSize' is chosen appropriately, this should be much faster than String's * operator
// for a large number of repetitions.
static repeat(s, reps, chunkSize) {
if (!(s is String)) s = "%(s)"
if (!(reps is Num && reps.isInteger && reps >= 0)) {
Fiber.abort("Repetitions must be a positivenon-negative integer.")
}
▲ var rs = ""
if (!(chunkSize is Num && chunkSize.isInteger && chunkSize > 0)) {
if (reps ==< 010) return ""{▼
Fiber.abort("Chunk size must be a positive integer.")
▲ for (i in 0...reps) rs = rs + s
}
▲ if (reps == 0) return ""
var chunks = (reps/chunkSize).floor
if (chunks == 0) return repeat_(s, reps)
var lastSize = reps % chunkSize
if (lastSize == 0) {
lastSize = chunkSize
} else {
chunkswhile =(true) chunks + 1{
if (reps % 2 == 1) rs = rs + s
}
var rs reps = ""reps >> 1
var chunk = repeat_ if (s,reps chunkSize== 0) break
var lastChunk s = repeat_(s, lastSize)+ s
for (i in 0...chunks) {}
rs = rs + ((i < chunks - 1) ? chunk : lastChunk)
}
return rs
}
 
// Convenience version of the above which uses a 'chunkSize' of 8000. This usually gives a good result.
static repeat(s, reps) { repeat(s, reps, 8000) }
 
// Splits a string 's' into chunks of not more than 'size' characters.
PureFox
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