[#llvm-bind_front-08]
= xref:llvm.adoc[llvm]::bind_front
:relfileprefix: ../
:mrdocs:

C++20 `bind_front` prepends bound arguments to the callable.

== Synopsis

Declared in `<llvm/ADT/STLForwardCompat.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename FnT,
    typename... BindArgsT>
constexpr
auto
bind_front(
    FnT&& Fn,
    BindArgsT&&... BindArgs);
----

== Description

All bind arguments and the callable are forwarded and _stored_ by value. If you would like to pass by reference, use `std::ref` or `std::cref.`

== Return Value

A function object that prepends `BindArgs` when called.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *Fn*
| The callable to bind arguments to.
| *BindArgs*
| Arguments to prepend when the returned object is called.
|===


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