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> Unreal Engine API Reference > Plugins > RigLogicLib > dna > Writer > Writer::setFrom

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Writer::setFrom

Initialize the [Writer](API\Plugins\RigLogicLib\dna\Writer) from the given [Reader](API\Plugins\RigLogicLib\dna\Reader). @note This function copies all the data from the given [Reader](API\Plugins\RigLogicLib\dna\Reader) into the [Writer](API\Plugins\RigLogicLib\dna\Writer) instance, by calling each getter function of the [Reader](API\Plugins\RigLogicLib\dna\Reader), and passing the return values to the matching setter functions in the [Writer](API\Plugins\RigLogicLib\dna\Writer). It is implemented in the abstract class itself to provide the functionality for all DNA Writers.

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References

Module	RigLogicLib
Header	/Engine/Plugins/Animation/RigLogic/Source/RigLogicLib/Public/dna/Writer.h
Include	#include "dna/Writer.h"
Source	/Engine/Plugins/Animation/RigLogic/Source/RigLogicLib/Private/dna/Writer.cpp

Syntax

void setFrom
(
    const Reader * source,
    DataLayer layer,
    MemoryResource * memRes
)

Remarks

Initialize the Writer from the given Reader. @note This function copies all the data from the given Reader into the Writer instance, by calling each getter function of the Reader, and passing the return values to the matching setter functions in the Writer. It is implemented in the abstract class itself to provide the functionality for all DNA Writers.

Parameters

Parameter	Description
source	The source DNAReader from which the data needs to be copied.
layer	Limit which layers should be taken over from the given source reader.
memRes	Optional memory resource to use for temporary allocations during copying.

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