in reply to can regex contains function?
> can regex contains function?
Yes, it can. That's what /e is for.
$t =~ s/(?<=\s)(.)/uc $1/ge;
But you don't need it here:
$t =~ s/(?<=\s)(.)/\U$1/g;
map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]
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