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  1. or download this
    > perl -wle "sub foo { print 'In foo' }; my $func='foo'; &$func"
In foo
  2. or download this
    > perl -Mstrict -wle "sub foo { print 'In foo' }; my $func='foo'; &$fu
+nc"
Can't use string ("foo") as a subroutine ref while "strict refs" in us
+e at -e line 1.