|No such thing as a small change|
Re^5: list of four digit lock combinations without repeated digitsby BrowserUk (Pope)
|on Jun 21, 2018 at 10:32 UTC||Need Help??|
when using map to remove that it gets even slower than mine. What's going on?
You are starting the regex engine 210 times.
If you don't want the spaces, don't put them in to start with. Rather than "@$_" use join'',@$_ or pack 'A*', @$_, or set $"=undef.
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