Hi, two approaches would be:
func camelAppend(str string) string {
w := []rune(str)
for i := len(w) - 1; i > 1; i-- {
if unicode.IsUpper(w[i]) {
w = append(w[:i], append([]rune{' '}, w[i:]...)...)
}
}
return string(w)
}
func camelRegexp(str string) string {
re := regexp.MustCompile(`([A-Z]+)`)
str = re.ReplaceAllString(str, ` $1`)
str = strings.Trim(str, " ")
return str
}
$ go test -bench=.
goos: darwin
goarch: amd64
BenchmarkCamelAppend-4 3000000 444 ns/op
BenchmarkCamelRegexp-4 200000 11224 ns/op
PASS
Am Sonntag, 3. September 2017 23:23:59 UTC+2 schrieb Tong Sun:
>
> Hi,
>
> I need to split "CamelCaseWords" into individual words like "Camel Case
> Words".
> The following is the Perl code that I get for doing just that:
>
> @words = $words[0] =~ /[A-Z][^A-Z]*/g
> if @words == 1 && $words[0] =~ /^[A-Z]/;
>
> However, I've been staring at it long enough to confirm myself that I
> really don't quite understand how it was done.
>
> Anyway, I'm wondering what's the neat way to do it in Go.
>
> PS. if you must know, I know that the algorithm I can borrow from is
> github.com/danverbraganza/varcaser, but when I was trying to use it, I
> noticed a side effect that makes it works for "myConstantVariable" but not
> for "GNU PYTHON Standard":
> https://github.com/danverbraganza/varcaser/issues/1
>
> Thanks
>
>
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