June 2002
Beginner
759 pages
80h 42m
English
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strict
Pragma for doing strict error checking within the
current block. Can be turned off by prefixing with no:
use strict 'vars'; ... no strict 'vars';
Provides three kinds of restriction:
strict 'refs'Generates runtime error if you use any symbolic references.
strict 'subs'Generates compile-time error if you use a bareword identifier that’s not a predeclared subroutine.
strict 'vars'Generates compile-time error if you access a variable that wasn’t declared via
my, isn’t fully qualified, or wasn’t imported.
use strict by itself (with no
import list) is the most restrictive, causing all possible
restrictions to be imposed.
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