godot/doc/classes/FuncRef.xml
Rémi Verschelde 2d20fc39aa doc: Drop unused 'category' property from header
We already removed it from the online docs with #35132.

Currently it can only be "Built-In Types" (Variant types) or "Core"
(everything else), which is of limited use.

We might also want to consider dropping it from `ClassDB` altogether
in Godot 4.0.
2020-01-26 16:02:39 +01:00

58 lines
2.1 KiB
XML

<?xml version="1.0" encoding="UTF-8" ?>
<class name="FuncRef" inherits="Reference" version="3.2">
<brief_description>
Reference to a function in an object.
</brief_description>
<description>
In GDScript, functions are not [i]first-class objects[/i]. This means it is impossible to store them directly as variables, return them from another function, or pass them as arguments.
However, by creating a [FuncRef] using the [method @GDScript.funcref] function, a reference to a function in a given object can be created, passed around and called.
</description>
<tutorials>
</tutorials>
<methods>
<method name="call_func" qualifiers="vararg">
<return type="Variant">
</return>
<description>
Calls the referenced function previously set by [method set_function] or [method @GDScript.funcref].
</description>
</method>
<method name="call_funcv">
<return type="Variant">
</return>
<argument index="0" name="arg_array" type="Array">
</argument>
<description>
Calls the referenced function previously set by [method set_function] or [method @GDScript.funcref]. Contrarily to [method call_func], this method does not support a variable number of arguments but expects all parameters to be passed via a single [Array].
</description>
</method>
<method name="is_valid" qualifiers="const">
<return type="bool">
</return>
<description>
Returns whether the object still exists and has the function assigned.
</description>
</method>
<method name="set_function">
<return type="void">
</return>
<argument index="0" name="name" type="String">
</argument>
<description>
The name of the referenced function to call on the object, without parentheses or any parameters.
</description>
</method>
<method name="set_instance">
<return type="void">
</return>
<argument index="0" name="instance" type="Object">
</argument>
<description>
The object containing the referenced function. This object must be of a type actually inheriting from [Object], not a built-in type such as [int], [Vector2] or [Dictionary].
</description>
</method>
</methods>
<constants>
</constants>
</class>