[#absl-AnyInvocable-2conversion]
= xref:absl.adoc[absl]::xref:absl/AnyInvocable.adoc[AnyInvocable]::operator bool
:relfileprefix: ../../
:mrdocs:

absl::AnyInvocable::operator bool()

== Synopsis

Declared in `<absl/functional/any_invocable.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
explicit
operator bool() const noexcept;
----

== Description

Returns `true` if `*this` is not empty.

WARNING: An `AnyInvocable` that wraps an empty `std::function` is not itself empty. This behavior is consistent with the standard equivalent `std::move_only_function`. In the following example, `a()` will actually invoke `f()`, leading to an `std::bad_function_call` exception: std::function<void()> f; // empty absl::AnyInvocable<void()> a = f; // not empty

Invoking an empty `AnyInvocable` results in undefined behavior.

== Return Value

`true` if `*this` is not empty.


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