[#absl-c_is_permutation-06]
= xref:absl.adoc[absl]::c_is_permutation
:relfileprefix: ../
:mrdocs:

`c_is_permutation` overloads

== Synopses

Declared in `<absl/algorithm/container.h>`

Container‐based version of the <algorithm> `std::is_permutation()` function to test whether a container is a permutation of another.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename C1,
    typename C2>
constexpr
bool
xref:absl/c_is_permutation-08.adoc[c_is_permutation](
    C1 const& c1,
    C2 const& c2);
----

[.small]#xref:absl/c_is_permutation-08.adoc[_» more..._]#

Overload of `c_is_permutation()` for using a predicate evaluation other than `==` as the function's test condition.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename C1,
    typename C2,
    typename BinaryPredicate>
constexpr
bool
xref:absl/c_is_permutation-0b.adoc[c_is_permutation](
    C1 const& c1,
    C2 const& c2,
    BinaryPredicate&& pred);
----

[.small]#xref:absl/c_is_permutation-0b.adoc[_» more..._]#

== Return Value

* `true` if `c1` is a permutation of `c2`, otherwise `false`.
* `true` if `c1` is a permutation of `c2` under `pred`, otherwise `false`.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *c1*
| The first container.
| *c2*
| The second container.
| *pred*
| The binary predicate used to compare elements.
|===


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