scalar

• What does scalar do?

• scalar says, "make this expression have its scalar context effect"

  • Whether or not it is in scalar context

• For example:

        print "The array contains ", scalar(@array), "items\n";

• If the expression is already in scalar context, scalar has no effect

• These are the same:

        print "The array contains " . scalar(@array) . "items\n";

        print "The array contains " .        @array  . "items\n";

• Because . provides a scalar context to its operands

• Similarly:

       ... if scalar(@files) > 1;

       ... if        @files  > 1;

• > already provides a scalar context

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Copyright © 2006 M. J. Dominus