subs3p

Perl pragma to predeclare subroutine names

Usage

    use subs qw(frob);
    frob 3..10;

Overview

This will predeclare all the subroutines whose names are in the list, allowing you to use them without parentheses (as list operators) even before they're declared.

Unlike pragmas that affect the $^H hints variable, the "use vars" and "use subs" declarations are not lexically scoped to the block they appear in: they affect the entire package in which they appear. It is not possible to rescind these declarations with "no vars" or "no subs".

See "Pragmatic Modules" in perlmodlib and "strict subs" in strict.

Releases

32 releases since OpenBSD 5.0; the text changed 20 times.

5.0–5.3
5.4–5.5
5.6
5.7
5.8–5.9
6.0
6.1
6.2
6.3–6.4
6.5
6.6
6.7
6.8
6.9–7.2
7.3
7.4
7.5
7.6
7.7–7.8
7.9
8.0