nil

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Description

Description:

Nil value. This value can be used to undefine existing variables.

Groups:

Uncategorised

Syntax

Syntax:

nil

Return Value:

Void

Examples

Example 1:

variableToDestroy = nil;

Additional Information

See also:

isNilVariables

Notes

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Notes

Mikero

Note that ArrayName = nil destroys the arrayNAME not the array content. Array content is 'destroyed' when no more ArrayNames refer to the content.

Worldeater

Never ever assign a value to nil! Doing so creates a global variable with the same name that overrides the "command" nil: foo = "foo"; nil = "bar"; foo = nil; hint foo; // displays "bar"

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Posted on September 25, 2014 - 09:50 (UTC)

Kenoxite

While isNil isn't available in OFP/CWA you can easily emulate it with something like this:

_nil = format["%1",_nilstring];
?(format["%1",foo]==_nil): foo = "Hello World!"

Posted on April 08, 2016 - 21:35 (UTC)

'Pierre MGI

To illustrate Mikero's comment: Destroying a variable doesn't mean the engine "reset" the "container" of the value. For example, just test:

0 = [] spawn { 
  while {true} do {
    sleep 0.5; 
    if (isNil "my_var") then {my_var = player addAction ["useless action", {}]};
    player removeAction  my_var;
    hintSilent format ["%1", my_var];
    my_var = nil;
}}

Container my_var is still incremented, even if value my_var is voided.