[#absl-AnySpan-2constructor-0d8]
= xref:absl.adoc[absl]::xref:absl/AnySpan.adoc[AnySpan]::AnySpan
:relfileprefix: ../../
:mrdocs:

Constructs a span wrapping a const view container (transform by copy).

== Synopsis

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

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

== Description

Enabled even for mutable spans, since some views expose mutable element access when const. 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.
|===


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