Namespace

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« a namespace is a set of symbols that are used to organize objects of various kinds, so that these objects may be referred to by name. A namespace ensures that all the identifiers within it have unique names so that they can be easily identified. » – Wikipedia (source)

Namespace - set of variables. Introduced with 1.00.

Get namespace

These commands return the "Namespace" type:

Game	Command	Description
1.00	missionNamespace	returns the global namespace attached to the mission
1.00	parsingNamespace	returns the global namespace attached to the Config Parser
1.00	uiNamespace	returns the global namespace attached to the user interface
1.00	profileNamespace	returns the global namespace attached to the user profile
1.48	currentNamespace	returns the current namespace. Can be compared with isEqualTo or == and != (since Arma 3 v1.99.146509).
2.00	localNamespace	returns the local namespace.

You can save values in this different Namespaces without overwriting the variables with the same name.

Get namespace data

You can use the above with getVariable to get data.

Set namespace data

To set data to a namespace, there're two methods to do: namespace setVariable ["variableName", value];

with namespace do { variableName = value; };

missionNamespace is the default global namespace, so just "variableName = value;" will store data to missionNamespace.

Namespace Lifetimes

missionNamespace

Mission namespace is the main default partition that exists for the duration of a mission. All variables defined in mission namespace will cease to exist when mission ends. To make variables lasting longer than a mission, use different namespaces.

uiNamespace and parsingNamespace

These are 2 different namespaces, which have similar scope. Variables defined in these namespaces exist for the duration of the game .exe running and are lost when the game is shut down.

profileNamespace

This namespace will hold variables for a very long time and is attached to the user profile. Different profiles will have own set of variables stored with them. The saving of the profile namespace is forced with saveProfileNamespace command, but in Arma 3 this command is executed by vanilla game scripts already, so saving is done automatically.

localNamespace

Available since Arma 3 v1.99.146509. Same lifetime as missionNamespace but variables cannot be broadcast or serialized.

Namespace serialization

Only missionNamespace is serialized. This means that all variables in this namespace will be saved when the game is saved and loaded when the game is loaded. This is also the reason the game will complain that one should use disableSerialization when storing UI variables in missionNamespace. UI elements are temporary and therefore are exempt from serialization by default.