Core Function IsDeclared - Revision history

UberFoX: /* Remarks */

2015-06-14T20:06:22Z

Remarks

← Older revision		Revision as of 20:06, 14 June 2015
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	=== Remarks ===		=== Remarks ===
		+
		+	It is worth noting that even if the variable is $a = null; it will be considered DEFINED since it does exist

	=== Example ===		=== Example ===

UberFoX: /* flag */

2015-06-14T20:05:27Z

flag

← Older revision		Revision as of 20:05, 14 June 2015
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	1 = Local scope only		1 = Local scope only
	2 = Global scope only		2 = Global scope only
		+	3 = Max depth local scope only (Such as a classes My)
	</pre>		</pre>

UberFoX: 1 revision

2015-06-14T12:38:33Z

1 revision

← Older revision

Revision as of 12:38, 14 June 2015

UberFoX: 1 revision

2014-08-11T21:40:35Z

1 revision

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Revision as of 21:40, 11 August 2014

UberFoX: /* Return Value */

2013-08-25T23:12:00Z

Return Value

← Older revision		Revision as of 23:12, 25 August 2013
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	=== Return Value ===		=== Return Value ===

−	Success: Returns 1 if variable has been assigned.	+	Success: Returns true if variable has been assigned.

−	Failure: Returns 0 if variable doesn't exist yet.	+	Failure: Returns false if variable doesn't exist yet.

	=== Remarks ===		=== Remarks ===

UberFoX at 21:55, 26 April 2012

2012-04-26T21:55:45Z

← Older revision		Revision as of 21:55, 26 April 2012
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	<pre>		<pre>
−	IsDeclared( <variable name> )	+	IsDeclared( <variable name>, <flag> )
	</pre>		</pre>

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	=== Parameters ===		=== Parameters ===

−	==== ~~Expression~~ ====	+	==== variable name ====

	String representing name of the variable to be checked.		String representing name of the variable to be checked.
		+
		+	==== flag ====
		+
		+	Optional; Flag to decide the scope to be checked.
		+	<pre>
		+	0 = ANY scope (Should be Local first then Global) (Default)
		+	1 = Local scope only
		+	2 = Global scope only
		+	</pre>

	=== Return Value ===		=== Return Value ===

Alexpja at 20:00, 4 December 2011

2011-12-04T20:00:42Z

← Older revision		Revision as of 20:00, 4 December 2011
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	==== Expression ====		==== Expression ====

−	~~string~~ representing name of the variable to be checked.	+	String representing name of the variable to be checked.

	=== Return Value ===		=== Return Value ===
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	Success: Returns 1 if variable has been assigned.		Success: Returns 1 if variable has been assigned.

−	Failure: Returns 0 if variable ~~doesnt~~ exist yet.	+	Failure: Returns 0 if variable doesn't exist yet.

	=== Remarks ===		=== Remarks ===

UberFoX: Created page with "

 IsDeclared(  )

=== Description === Check if a variable has been declared === Parameters === ==== Expression ==== string representing name of the ..."

2011-11-28T10:30:28Z

Created page with "<pre> IsDeclared( <variable name> ) </pre> === Description === Check if a variable has been declared === Parameters === ==== Expression ==== string representing name of the ..."

New page

<pre>
IsDeclared( <variable name> )
</pre>

=== Description ===

Check if a variable has been declared

=== Parameters ===

==== Expression ====

string representing name of the variable to be checked.

=== Return Value ===

Success: Returns 1 if variable has been assigned.

Failure: Returns 0 if variable doesnt exist yet.

=== Remarks ===

=== Example ===

<syntaxhighlight lang="sputnik">
If (!IsDeclared("a"))
MsgBox('$a is NOT declared'); // $a has never been assigned

$a=1;

If (IsDeclared ("a"))
MsgBox('$a IS declared'); //due to previous $a=1 assignment
</syntaxhighlight>

[[Category:Core Function]]