[#bsl-basic_string-01d-reserve]
= xref:bsl.adoc[bsl]::xref:bsl/basic_string-01d.adoc[basic_string<char8_t>]::reserve
:relfileprefix: ../../
:mrdocs:

Change the capacity of this string to the specified `newCapacity`. Note that the capacity of a string is the maximum length it can accommodate without reallocation. The actual storage allocated may be higher.

== Synopsis

Declared in `<bslstl_string.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
reserve(xref:bsl/basic_string-01d/size_type.adoc[size_type] newCapacity);
----


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