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When you use an empty prototype (no args) for constants, the parser then knows not to interpret anything that follows as arguments for to that sub:

sub LOW_PRE_PI {3.141} sub HI_POST_PI () {3.142} my @n_proto = (1, LOW_PRE_PI + 5, 11, 15); my @y_proto = (1, HI_POST_PI + 5, 11, 15); print "@n_proto\n@y_proto"; __END__ Output: 1 3.141 1 8.142 11 15

In the first case, everything following the unprototyped version is taken as an argument list for the subroutine.


In reply to Re: Re: (tye)Re: When to use Prototypes? by danger
in thread When to use Prototypes? by demerphq

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