[#bsl-compose1]
= xref:bsl.adoc[bsl]::compose1
:relfileprefix: ../
:mrdocs:

Return an `unary_compose` function object constructed using the specified `fn1` and `fn2` unary functions. The returned function object is equivalent to `fn1(fn2(x))`.

== Synopsis

Declared in `<bslstp_exfunctional.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class OPERATION1,
    class OPERATION2>
xref:bsl/unary_compose.adoc[unary_compose<OPERATION1, OPERATION2>]
compose1(
    OPERATION1 const& fn1,
    OPERATION2 const& fn2);
----


[.small]#Created with https://www.mrdocs.com[MrDocs]#