local (Perl function) - Revision history

Woozle: Local (Perl function) moved to local (Perl function)

2006-05-26T18:29:28Z

Local (Perl function) moved to local (Perl function)

← Older revision	Revision as of 18:29, 26 May 2006
(No difference)

Woozle: declaring references

2006-04-08T01:31:25Z

declaring references

← Older revision		Revision as of 01:31, 8 April 2006
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	{{perlfunc\|local}}() is very similar to {{perlfunc\|my}}(), except that {{perlfunc\|my}}() does not do dynamic scoping. {{perlfunc\|my}}() is generally recommended over {{perlfunc\|local}}(). (You may hear the saying "Don't use local()" from experienced Perl programmers.)		{{perlfunc\|local}}() is very similar to {{perlfunc\|my}}(), except that {{perlfunc\|my}}() does not do dynamic scoping. {{perlfunc\|my}}() is generally recommended over {{perlfunc\|local}}(). (You may hear the saying "Don't use local()" from experienced Perl programmers.)

			On the other hand, variable references (e.g *varname) can be declared within {{perlfunc\|local}}() but not within {{perlfunc\|my}}().
	==Examples==		==Examples==
	* local($avar,$anothervar);		* local($avar,$anothervar);
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	* local $justonevar;		* local $justonevar;
	* local @anArray;		* local @anArray;
			* local (*aReference,$somethingElse) = @_;

Woozle: Local (Perl) moved to Local (Perl function)

2006-04-07T23:36:41Z

Local (Perl) moved to Local (Perl function)

← Older revision	Revision as of 23:36, 7 April 2006
(No difference)

Woozle: local var preserves/ignores globals of the same name

2006-04-07T17:51:56Z

local var preserves/ignores globals of the same name

← Older revision		Revision as of 17:51, 7 April 2006
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	* within any further curly braces that are within that current set (as one would expect)		* within any further curly braces that are within that current set (as one would expect)
	* within any functions called from within the current set of curly braces (or from within any others nested inside that); this is called "dynamic scoping"		* within any functions called from within the current set of curly braces (or from within any others nested inside that); this is called "dynamic scoping"

			If a variable of the same name exists outside of the current scope, {{perlfunc\|local}}() creates a new variable and ignores/preserves the older variable. ''Query: is there a way to access the older variable from inside this scope?'' The older variable is once again accessible when execution leaves {{perlfunc\|local}}()'s defined scope.

	{{perlfunc\|local}}() is very similar to {{perlfunc\|my}}(), except that {{perlfunc\|my}}() does not do dynamic scoping. {{perlfunc\|my}}() is generally recommended over {{perlfunc\|local}}(). (You may hear the saying "Don't use local()" from experienced Perl programmers.)		{{perlfunc\|local}}() is very similar to {{perlfunc\|my}}(), except that {{perlfunc\|my}}() does not do dynamic scoping. {{perlfunc\|my}}() is generally recommended over {{perlfunc\|local}}(). (You may hear the saying "Don't use local()" from experienced Perl programmers.)

Woozle at 17:46, 7 April 2006

2006-04-07T17:46:40Z

New page

The [[built-in function (Perl)|built-in function]] {{perlfunc|local}}() in [[Perl]] creates a variable that is local to the current scope and any functions called from within that scope. That is, it is defined:
* within the current set of curly braces {}
* within any further curly braces that are within that current set (as one would expect)
* within any functions called from within the current set of curly braces (or from within any others nested inside that); this is called "dynamic scoping"

{{perlfunc|local}}() is very similar to {{perlfunc|my}}(), except that {{perlfunc|my}}() does not do dynamic scoping. {{perlfunc|my}}() is generally recommended over {{perlfunc|local}}(). (You may hear the saying "Don't use local()" from experienced Perl programmers.)
==Examples==
* local($avar,$anothervar);
* local($arg1,$arg2) = @_;
* local(%hashvar);
* local %anotherhash;
* local $justonevar;
* local @anArray;