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Function prototype: Difference between revisions
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The perl scripting language allows prototypes to be checked during JIT compilation. Prototypes should be placed before subroutine definitions, declarations, or anonymous subroutines. The sigil [http://rosettacode.org/wiki/Special_characters#Perl special symbols] act as argument type placeholders.
<lang perl>sub noargs(); # Declare a function with no arguments
sub twoargs($$); # Declare a function with two scalar arguments. The two sigils act as argument type placeholders
</lang>
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