[#absl-AnySpan-2constructor-005]
= xref:absl.adoc[absl]::xref:absl/AnySpan.adoc[AnySpan]::AnySpan
:relfileprefix: ../../
:mrdocs:

Constructs a span wrapping a mutable container (transform by ref).

== Synopsis

Declared in `<absl/types/any_span.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename Container,
    typename Transform = xref:absl/any_span_transform/IdentityT.adoc[any_span_transform::IdentityT],
    typename = Container,
    typename = xref:absl/AnySpan.adoc[EnableIfContainer<Container>],
    typename = xref:absl/AnySpan.adoc[EnableIfTransformIsValid<Transform, decltype(std::declval<Container&>()[0])>],
    xref:absl/AnySpan.adoc[EnableIfTransformIsByRef<Transform>] = true>
constexpr
explicit
AnySpan(
    Container& container,
    Transform const& transform = any_span_transform::Identity());
----

== Description

Only enabled when `T` is mutable. The transform, container, and its storage must outlive this span; reallocating or resizing the container invalidates the span.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *container*
| The container whose elements the span refers to.
| *transform*
| Functor applied to each element on access.
|===


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