'The inserted conditional code regex for Raku

How to do the inserted conditional code regex in Raku regex
As analogue to its Perl regex

 my $F = 1;
 'foobarbar' =~ / (?(?{  $F  }) foo |  bar ) bar /x  ;

Please help out after tried so hard a day to no avail, thanks.

raku


Solution 1:[1]

This will work:

my $F=1
'foobar' ~~ / ^^ "{ $F ?? "foo" !! "bar" }" bar /; # ?foobar?
$F=0
'foobar' ~~ / ^^ "{ $F ?? "foo" !! "bar" }" bar /; # Nil

Code blocks in regexes will be run, but unless you convert them explicitly to strings (via quotes) they will be discarded.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 jjmerelo

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