[#BDLB_SCOPEEXIT_PRIVATE_CAT]
= BDLB&lowbar;SCOPEEXIT&lowbar;PRIVATE&lowbar;CAT
:mrdocs:

Concatenate two preprocessor tokens for unique guard names&period;

== Synopsis

Declared in `&lt;bdlb&lowbar;scopeexit&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
#define BDLB&lowbar;SCOPEEXIT&lowbar;PRIVATE&lowbar;CAT(X, Y)

----

== Description

This macro is for use by `BDLB&lowbar;SCOPEEXIT&lowbar;GUARD` only to provide unique variable names&period; It is _not_ undefined by the end of the file but its direct use is not supported under any circumstances&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *X*
| first preprocessor token to concatenate
| *Y*
| second preprocessor token to concatenate
|===


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