Category talk:Wren-str: Difference between revisions
→Source code: Added Str.toNum method.
(Bug fixed properly now!) |
(→Source code: Added Str.toNum method.) |
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Line 595:
var chars = ca.map { |c| String.fromCodePoint(c) }.toList
return (count < 1000) ? Strs.concat_(chars) : Strs.concat(chars, 1000)
}
// After trimming whitespace from the string 's', takes as many characters as possible
// to form a valid number and converts it thereto using the Num.fromString method.
// Returns null if such a conversion is impossible.
static toNum(s) {
if (s is Num) return s
if (!(s is String)) s = "%(s)"
s = s.trim()
var n = Num.fromString(s)
if (n) return n
if (s.count < 2) return null
var chars = s.toList
for (i in chars.count-1..1) {
chars.removeAt(i)
if (n = Num.fromString(chars.join())) return n
}
return null
}
}
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