Remove spaces between words

support
1

Is there a better way to remove spaces between words than using a regular expression?

I would like to use a Params entry with printf to add to the end of a URL, while stripping out the white space between words. E.g. In Stock becomes InStock.

2

No, to remove all spaces you will need to scan the string for it.

The replaceRE function should be the fastest way to do so.

Hint, I would use backquotes to delimit the pattern so you don’t have to escape

This will remove all sequences of spaces and tabs with nothing.

replaceRE `(\s|\t)+` "" .Title

{{ printf "http://bla.com/%s" (replace .Params.foo " " "") }}

update: if you only want spaces you might also try replace .Title " " "" (maybe faster)

3

Worked like a charm! Thanks

4

Even though we cache the compiled regex, strings.Replace will be faster than strings.ReplaceRE.

{{ $c := "The Hunchback Of Notre Dame" }}
{{ range 100000 }}
  {{ $t := debug.Timer "Method A" }}
    {{ strings.Replace $c " " "" }}
  {{ $t.Stop }}
  {{ $t := debug.Timer "Method B" }}
    {{ strings.ReplaceRE `\s` "" $c }}
  {{ $t.Stop }}
  {{ $t := debug.Timer "Method C" }}
    {{ strings.ReplaceRE " " "" $c }}
  {{ $t.Stop }}
{{ end }}

If you need to replace any whitespace character (e.g., space, tab, newline) you’ll need to use Method B.

1 Like
5

per page, per site or per globally per regex?

always good to get a proof for an estimation :wink: thx

6

https://github.com/gohugoio/hugo/blob/master/tpl/strings/regexp.go#L102

7

ok. a struct definded in strings.go

var reCache = regexpCache{re: make(map[string]*regexp.Regexp)}

sounds quite global

8

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