[#BloombergLP-bdlat-ArrayUtil]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlat.adoc[bdlat]::ArrayUtil
:relfileprefix: ../../
:mrdocs:

This `struct` provides a namespace for suite of function templates providing non‐primitive operations on "array" types.

== Synopsis

Declared in `<bdlat_arrayutil.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
struct ArrayUtil;
----

== Static Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bdlat/ArrayUtil/accessElementByCategory.adoc[`accessElementByCategory`] 
| Invoke the specified `accessor` on the non‐modifiable element at the specified `index` of the specified `array` and on a prvalue of the category tag type for the dynamic category of the element. See {`bdlat_typecategory`|Category Tags and Enumerators} for documentation about category tags. Return the value from the invocation of `accessor`. The accessor must be an accessor functor. See {`bdlat_typecategory`|`ACCESSOR` Functors} for the requirements on `accessor`. The behavior is undefined unless `0 <= index < bdlat_ArrayFunctions::size(array)`.
| xref:BloombergLP/bdlat/ArrayUtil/manipulateElementByCategory.adoc[`manipulateElementByCategory`] 
| Invoke the specified `manipulator` on the address of the element at the specified `index` of the specified `array` and on a prvalue of the category tag type for the dynamic category of the element. See {`bdlat_typecategory`|Category Tags and Enumerators} for documentation about category tags. Return the value from the invocation of `manipulator`. The `manipulator` must be a manipulator functor. See {`bdlat_typecategory`|`MANIPULATOR` Functors} for the requirements on `manipulator`. The behavior is undefined unless `0 <= index < bdlat_ArrayFunctions::size(array)`.
|===



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