[#absl-AnySpan-2constructor-09e]
= xref:absl.adoc[absl]::xref:absl/AnySpan.adoc[AnySpan]::AnySpan
:relfileprefix: ../../
:mrdocs:

Constructs a span wrapping a fixed‐size mutable array (transform by ref).

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename Element,
    xref:absl/AnySpan/size_type.adoc[size_type] N,
    typename Transform = xref:absl/any_span_transform/IdentityT.adoc[any_span_transform::IdentityT],
    typename = Element,
    typename = xref:absl/AnySpan.adoc[EnableIfTransformIsValid<Transform, Element&>],
    xref:absl/AnySpan.adoc[EnableIfTransformIsByRef<Transform>] = true>
constexpr
AnySpan(
    Element(& array)[],
    Transform const& transform = any_span_transform::Identity());
----

== Description

The transform must be a function object whose const `operator()` takes an `Element` and returns a reference to `T` or a compatible object. Both the transform and array must outlive this span.

== Parameters

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


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