Help for this page

Select Code to Download

Select or download this

#!/usr/bin/perl

...
is "$french_for{$num}",     'un', 'bare variable key';
is "$french_for{'$num'}",   'un', 'single quoted variable key';
is qq[$french_for{"$num"}], 'un', 'double quoted variable key';

Select or download this

  temp $ touch foo.bar
  temp $ ls
...
  temp $  perl -Te '%ENV = (); print "$ENV{`rm foo.bar`}"'
  temp $ ls
  temp $