[#bsl-function-0a-operator()]
= xref:bsl.adoc[bsl]::xref:bsl/function-0a.adoc[function]::operator()
:relfileprefix: ../../
:mrdocs:

If this object is empty, throw `bsl::bad_function_call`; otherwise invoke the target object with the specified `args...` and return the result (after conversion to `RET`). Note that, even though it is declared `const`, this call operator can mutate the target object and is thus considered a manipulator rather than an accessor.

== Synopsis

Declared in `<bslstl_function.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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using Base::operator();
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