[#boost-urls-params_encoded_ref-operator_assign-03]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/params_encoded_ref.adoc[params_encoded_ref]::operator=
:relfileprefix: ../../../
:mrdocs:


Assignment

== Synopsis


Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/params_encoded_ref.hpp#L179[boost/url/params_encoded_ref.hpp]>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:boost/urls/params_encoded_ref.adoc[params_encoded_ref]&
operator=(std::initializer_list<xref:boost/urls/param_pct_view.adoc[param_pct_view]> init);
----

== Description


After assignment, the previous contents        of the query parameters are replaced by        the contents of the initializer‐list.

All iterators are invalidated.


=== Preconditions

None of character buffers referenced by        `init` may overlap the character buffer of        the underlying url, or else the behavior        is undefined.


=== Effects

[,cpp]
----
this->assign( init.begin(), init.end() );
----

=== Complexity

Linear in `init.size()`.


=== Exception Safety

Strong guarantee.        Calls to allocate may throw.        Exceptions thrown on invalid input.



== Exceptions


|===
| Name | Thrown on

| `system_error`
| `init` contains an invalid percent‐encoding.


|===

== Parameters


|===
| Name | Description

| *init*
| The list of params to assign.


|===



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