[#boost-urls-params_ref-assign-098]
= xref:boost/urls/params_ref/assign-098.adoc[boost::urls::params_ref::assign]
:relfileprefix: ../../../
:mrdocs:

Assign elements

== Synopsis

Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/params_ref.hpp#L321[boost/url/params_ref.hpp]>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
assign(std::initializer_list<param_view> init);
----

== Description

This function replaces the entire contents of the view with the params in the _initializer‐list_.

All iterators are invalidated.

[NOTE]
The strings referenced by the inputs must not come from the underlying url, or else the behavior is undefined.

== Example
[,cpp]
----
url u;

u.params().assign( {{ "first", "John" }, { "last", "Doe" }} );
----
== Complexity
Linear in `init.size()`.

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

== Parameters

[cols=2]
|===
| Name
| Description
| *init*
| The list of params to assign.
|===


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