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Variant class (CPP): Update COW info, closes #938

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Max Hilbrunner 2018-01-02 22:45:44 +01:00 committed by GitHub
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@ -39,7 +39,7 @@ References:
- `core/variant.h <https://github.com/godotengine/godot/blob/master/core/variant.h>`__ - `core/variant.h <https://github.com/godotengine/godot/blob/master/core/variant.h>`__
Dictionary and Array Containers: Dictionary and Array
-------------------- --------------------
Both are implemented using variants. A Dictionary can match any datatype Both are implemented using variants. A Dictionary can match any datatype
@ -47,14 +47,12 @@ used as key to any other datatype. An Array just holds an array of
Variants. Of course, a Variant can also hold a Dictionary and an Array Variants. Of course, a Variant can also hold a Dictionary and an Array
inside, making it even more flexible. inside, making it even more flexible.
Both have a shared mode and a COW mode. Scripts often use them in shared Modifications to a container will modify all references to
mode (meaning modifications to a container will modify all references to it. A Mutex should be created to lock it if multi threaded access is
it), or COW mode (modifications will always alter the local copy, making
a copy of the internal data if necessary, but will not affect the other
copies). In COW mode, Both Dictionary and Array are thread-safe,
otherwise a Mutex should be created to lock if multi thread access is
desired. desired.
Copy-on-write (COW) mode support for containers was dropped with Godot 3.0.
References: References:
~~~~~~~~~~~ ~~~~~~~~~~~