[#boost-urls-url-operator_assign-0b]
= xref:boost/urls/url/operator_assign-0b.adoc[boost::urls::url::operator=]
:relfileprefix: ../../../
:mrdocs:

Assignment

== Synopsis

Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/url.hpp#L299[boost/url/url.hpp]>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:boost/urls/url.adoc[url]&
operator=(xref:boost/urls/url_view_base.adoc[url_view_base] const& u);
----

== Description

The contents of `u` are copied and the previous contents of `this` are destroyed. Capacity is preserved, or increases.

== Postconditions
[,cpp]
----
this->buffer() == u.buffer() && this->buffer().data() != u.buffer().data()
----
== Complexity
Linear in `u.size()`.

== Exception Safety
Strong guarantee. Calls to allocate may throw.

== Exceptions

[cols=2]
|===
| Name
| Thrown on
| `std::length_error`
| `u.size() > max_size()`.
|===

== Return Value

A reference to this object.

== Parameters

[cols=2]
|===
| Name
| Description
| *u*
| The url to copy.
|===


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