[#BloombergLP-baljsn-EncoderTestSequenceWithUntagged9-manipulateAttribute-073]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/baljsn.adoc[baljsn]::xref:BloombergLP/baljsn/EncoderTestSequenceWithUntagged9.adoc[EncoderTestSequenceWithUntagged9]::manipulateAttribute
:relfileprefix: ../../../
:mrdocs:

Invoke `manipulator` on the modifiable attribute indicated by `id`.

== Synopsis

Declared in `<baljsn_encoder_testtypes.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<typename t_MANIPULATOR>
int
manipulateAttribute(
    t_MANIPULATOR& manipulator,
    int id);
----

== Description

Invoke the specified 'manipulator' on the address of the (modifiable) attribute indicated by the specified 'id', supplying 'manipulator' with the corresponding attribute information structure. Return the value returned from the invocation of 'manipulator' if 'id' identifies an attribute of this class, and ‐1 otherwise.

== Return Value

the value returned from the invocation of `manipulator`, or a non‐zero value on failure

== Parameters

[cols="1,4"]
|===
| Name| Description
| *manipulator*
| functor invoked on the matching attribute
| *id*
| attribute identifier
|===


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