From the man page for constant:

 
In the current implementation, scalar
constants are actually inlinable subroutines. As
of version 5.004 of Perl, the appropriate scalar
con- stant is inserted directly in place of some
subroutine calls, thereby saving the overhead of a
subroutine call. See "Constant Functions" in
perlsub for details about how and when this
happens.

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From perlsub

 
If the result after optimization and constant
folding is either a constant or a lexically-scoped
scalar which has no other references, then it will
be used in place of function calls

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So, I'd interpret this to mean your constant really will be treated as you'd expect and like if it's really really a constant. Read up Constant Functions in perlsub for a better explaination.

In reply to Re: The best way to use constants by pileofrogs
in thread The best way to use constants by saurabh.hirani

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