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Program Repair Shop

118

Single Scalar Variable in Quotes

              $out_subs{"$sub_name"}{'title'}="$sub_name";

• In perl, "..." means "construct a string"

• $sub_name is already a string

• So "$sub_name" is a waste of time

• In other contexts, it leads to horrific bugs:

        my $arg = shift;
        foo("$arg");

• Here $arg was a reference

• Not any more!

• This is precisely the bad practice that strict refs was put in to save you from

              $out_subs{$sub_name}{title} = $sub_name;

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Copyright © 2002 M. J. Dominus