in reply to RE: Easy, elemental, but cool debug trick.
in thread Easy, elemental, but cool debug trick.
Perl has a command-line flag, -P (capital P), which sends its input script
through the C pre-processor before perl compilation. I can't
recall ever hearing of anybody actually using it, though it's
obviously there for a reason, and this sounds like as
good a reason as any. (Note that
perldoc perlrun warns, 'Because both comments and
cpp directives begin with the # character, you should
avoid starting comments with any words recognized by
the C preprocessor such as "if", "else", or "define".'
Also note that you can't define values on the command line;
-D sets debugger flags.)