[#BloombergLP-bdlpcre-RegEx-2constructor]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlpcre.adoc[bdlpcre]::xref:BloombergLP/bdlpcre/RegEx.adoc[RegEx]::RegEx
:relfileprefix: ../../../
:mrdocs:

Create a regular‐expression object in the "unprepared" state. Optionally specify a `basicAllocator` used to supply memory. The alignment strategy of the allocator must be "maximum" or "natural". If `basicAllocator` is 0, the currently installed default allocator is used.

== Synopsis

Declared in `<bdlpcre_regex.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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RegEx(xref:BloombergLP/bslma/Allocator.adoc[bslma::Allocator]* basicAllocator = 0);
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