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Program Repair Shop

255

Say What You Mean

• s/// is for replacing complex strings and patterns

• tr/// is for replacing all instances of one character with another

      35                $_->[$i] =~ s/0/L/g; 
      36                $_->[$i] =~ s/1/H/g;

• tr/// is even more appropriate here than usual:

        $_->[$i] =~ tr/01/LH/;

• In this case, it also makes the code smaller

• Similarly $_->[$i] =~ tr/X/0/ instead of $_->[$i] =~ s/X/0/g

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Copyright © 2002 M. J. Dominus