[#BloombergLP-bdlc-PackedIntArrayImp-0a-reserveCapacity-0f]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlc.adoc[bdlc]::xref:BloombergLP/bdlc/PackedIntArrayImp-0a.adoc[PackedIntArrayImp]::reserveCapacity
:relfileprefix: ../../../
:mrdocs:

Reserve capacity for `numElements` in `[minValue, maxValue]`.

== Synopsis

Declared in `<bdlc_packedintarray.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
reserveCapacity(
    std::size_t numElements,
    xref:BloombergLP/bdlc/PackedIntArrayImp-0a/ElementType.adoc[ElementType] minValue,
    xref:BloombergLP/bdlc/PackedIntArrayImp-0a/ElementType.adoc[ElementType] maxValue);
----

== Description

Make the capacity of this array at least the specified `numElements`. The specified `minValue` and `maxValue` denote, respectively, the minimum and maximum elements values that will be subsequently added to this array. After this call `numElements` having values in the range `[minValue, maxValue]` are guaranteed to not cause a reallocation. This method has no effect if the current capacity meets or exceeds the required capacity. The behavior is undefined unless `minValue <= maxValue`.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *numElements*
| minimum number of elements to reserve for
| *minValue*
| minimum element value expected after this call
| *maxValue*
| maximum element value expected after this call
|===


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