[#bsl-Vector_Util]
= xref:bsl.adoc[bsl]::Vector_Util
:relfileprefix: ../
:mrdocs:

This `struct` provides a namespace for implementing the `swap` member function of `vector<VALUE_TYPE, ALLOCATOR>`. `swap` can be implemented irrespective of the `VALUE_TYPE` or `ALLOCATOR` template parameters, which is why we implement it in this non‐parameterized, non‐inlined utility.

== Synopsis

Declared in `<bslstl_vector.h>`

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

== Static Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:bsl/Vector_Util/computeNewCapacity.adoc[`computeNewCapacity`] 
| Return a capacity that is at least the specified `newLength` and at least twice the specified `capacity` if this is less than the specified `maxSize`, but never more than `maxSize`. The behavior is undefined unless `capacity < newLength` and `newLength <= maxSize`.
| xref:bsl/Vector_Util/swap.adoc[`swap`] 
| Exchange the value of the specified `a` vector with that of the specified `b` vector.
|===



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