# Matching space

    my $str = "Check this out";

    # regexes default to space is insignificant
    say "No match" unless $str ~~ m/ Check this out /;

    # Make space significant with the :sigspace modifier (or :s).
    say "Matched '$/'" if $str ~~ m:s/ Check this out /;

    # Match using a literal space.
    say "Matched '$/'" if $str ~~ m/ Check ' ' /;

    # Match using a named character class.
    say "Matched '$/'" if $str ~~ m/ Check <space> this <space> out /;