From perldoc constant: 
       When a constant is used in an expression, perl replaces it
       with its value at compile time, and may then optimize the
       expression further.  In particular, any code in an "if
       (CONSTANT)" block will be optimized away if the constant
       is false.

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In other words, it's not a sub call any more.

-- Randal L. Schwartz, Perl hacker

In reply to Re: OOP - Constant Vs. Subroutine by merlyn
in thread OOP - Constant Vs. Subroutine by 2xlp

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