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


Assignment

== Synopsis


Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/url.hpp#L297[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


|===
| Name | Thrown on

| `std::length_error`
| `u.size() > max_size()`.


|===

== Parameters


|===
| Name | Description

| *u*
| The url to copy.


|===



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