Re^3: Using Look-ahead and Look-behind

[heyjoec]

I changed the sub TestEquity to allow for any text between Private and Equity, but I can't get it to work. What have I done wrong?

sub TestEquity {
    return 1 if $_[0] =~ m/(?<!private).*equity/;
    return 0;
}

[AnomalousMonk]

How about just (untested, and also case-sensitive):

sub TestEquity {
  return 
    $_[0] =~ m/private.*equity/ ? 0 :
    $_[0] =~ m/equity/          ? 1 :
                                  0
    ;
    }

This could be slightly simplified if you can tolerate  "" (empty string) as a false flag in addition to or in place of 0.

BTW: "I can't get it to work" is rarely helpful as a problem description. How about some input strings and actual versus expected output?

Update: Changed  $_[0] =~ m/private.*equity/ to  $_[0] =~ m/private/ because it makes more sense.
Update: ... and then changed it back to  $_[0] =~ m/private.*equity/ because it actually makes even more sense that way! (sigh)

[Anonymous Monk]

I changed the sub TestEquity to allow for any text between Private and Equity, but I can't get it to work. What have I done wrong?

Impossible to say, although the anomalous one makes a good point