Scope - Revision history

Vliedel: /* Example */ space before {

2009-10-03T23:07:22Z

Example: space before {

← Older revision		Revision as of 23:07, 3 October 2009
Line 57:		Line 57:
	}		}

	alias test2{		alias test2 {
	var %foo = Vliedel Smells		var %foo = Vliedel Smells
	[[echo]] -atg %foo		[[echo]] -atg %foo
Line 65:		Line 65:
	; This will echo "bar" because the first unset unset the local-scope variable %foo.		; This will echo "bar" because the first unset unset the local-scope variable %foo.
	}		}


	==See Also==		==See Also==

Aca20031: Scope Precedence

2009-10-03T19:11:17Z

Scope Precedence

@@ Line 21: / Line 21: @@
-%foo will now return bar EVERYWHERE.
+%foo will now return bar EVERYWHERE (unless overridden by a local variable)
 ==Local Scope==
@@ Line 43: / Line 43: @@
+  }

Aca20031 at 18:54, 3 October 2009

2009-10-03T18:54:21Z

← Older revision		Revision as of 18:54, 3 October 2009
Line 27:		Line 27:
	A variable with a local scope is only available within the event, alias, or menu (popup) script in which it is used.		A variable with a local scope is only available within the event, alias, or menu (popup) script in which it is used.

	* A local variable is created with [[var]] and is automatically destroyed after leaving scope (exiting the current alias, event or menu).		* A local variable is created with [[var]] and is automatically destroyed after leaving scope (exiting the current alias, event or menu). It can also be destroyed by [[unset]].

	===Example===		===Example===
Line 33:		Line 33:
	Suppose the following was called using /test		Suppose the following was called using /test
	[[alias]] test {		[[alias]] test {
	var %foo = bar.		[[var]] %foo = bar.
	; %foo is available here		; %foo is available here
	test2 %foo		test2 %foo
	}		}

	[[alias]] test2 {		[[alias]] test2 {
	~~set~~ %bar foo		[[var]] %bar = foo
	; %foo is NOT available here. We can, however, use $1 to refer to %foo because it was passed as a parameter to the alias.		; %foo is NOT available here. We can, however, use $1 to refer to %foo because it was passed as a parameter to the alias.
	}		}

Aca20031: copy paste error...

2009-10-03T18:52:13Z

copy paste error...

← Older revision		Revision as of 18:52, 3 October 2009
Line 33:		Line 33:
	Suppose the following was called using /test		Suppose the following was called using /test
	[[alias]] test {		[[alias]] test {
	~~set~~ %foo bar.		var %foo = bar.
	; %foo is available here		; %foo is available here
	test2 %foo		test2 %foo

Aca20031 at 18:48, 3 October 2009

2009-10-03T18:48:36Z

New page

Scope is the term used to refer to a [[:Category:Variables|variable's]] "life-span". mIRC variables have only two scopes.

==Global Scope==
A variable with a global scope is accessable everywhere in mIRC where a variable can be used. This means in the command line, in every script file, alias file, popup, etc. These variables are saved in the Variables tab of the mIRC Scripts editor (alt+r) which are saved to a file (usually vars.ini).

* A global scoped variable is created with [[set]] and destroyed with [[unset]]

===Example===

Suppose the following was called, /test and then /test2.

[[alias]] test {
set %foo bar.
; %foo is available here
}

[[alias]] test2 {
set %bar foo
; %foo is available here after being set with /test
}

%foo will now return bar EVERYWHERE.

==Local Scope==

A variable with a local scope is only available within the event, alias, or menu (popup) script in which it is used.

* A local variable is created with [[var]] and is automatically destroyed after leaving scope (exiting the current alias, event or menu).

===Example===

Suppose the following was called using /test
[[alias]] test {
set %foo bar.
; %foo is available here
test2 %foo
}

[[alias]] test2 {
set %bar foo
; %foo is NOT available here. We can, however, use $1 to refer to %foo because it was passed as a parameter to the alias.
}

==See Also==
* [[var]] - Command used to create a local variables
* [[Local Variables]] - Variables with limited scope
* [[set]] - Command used to create global variables

[[Category:Tutorials]]
[[Category:Variables]]