[#boost-urls-segments_encoded_ref-assign]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/segments_encoded_ref.adoc[segments&lowbar;encoded&lowbar;ref]::assign
:relfileprefix: ../../../
:mrdocs:


Assign segments

== Synopsis


Declared in `&lt;https://www.github.com/boostorg/url/blob/develop/include/boost/url/segments_encoded_ref.hpp#L320[boost&sol;url&sol;segments&lowbar;encoded&lowbar;ref&period;hpp]&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
xref:boost/urls/segments_encoded_ref/assign-0e.adoc[assign](std::initializer&lowbar;list&lt;xref:boost/urls/pct_string_view.adoc[pct&lowbar;string&lowbar;view]&gt; init);
----

[.small]#xref:boost/urls/segments_encoded_ref/assign-0e.adoc[_» more..._]#

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template&lt;class FwdIt&gt;
void
xref:boost/urls/segments_encoded_ref/assign-0b.adoc[assign](
    FwdIt first,
    FwdIt last);
----

[.small]#xref:boost/urls/segments_encoded_ref/assign-0b.adoc[_» more..._]#

== Description


The existing contents are replaced        by a copy of the contents of the        initializer list&period;        Reserved characters in the list are        automatically escaped&period;        Escapes in the list are preserved&period;

All iterators are invalidated&period;

[NOTE]
None of the character buffers referenced        by the list may overlap the character        buffer of the underlying url, or else        the behavior is undefined&period;


=== Example

[,cpp]
----
url u;

u.segments().assign( {"path", "to", "file.txt"} );
----

=== Complexity

Linear in `init&period;size() &plus; this&hyphen;&gt;url()&period;encoded&lowbar;query()&period;size() &plus; this&hyphen;&gt;url()&period;encoded&lowbar;fragment()&period;size()`&period;


=== Exception Safety

Strong guarantee&period;        Calls to allocate may throw&period;        Exceptions thrown on invalid input&period;



== Exceptions


|===
| Name | Thrown on

| `system&lowbar;error`
| The list contains an invalid percent&hyphen;encoding&period;


|===

== Parameters


|===
| Name | Description

| *init*
| The list of segments to assign&period;


| *first*
| The first element in the range&period;


| *last*
| One past the last element in the range&period;


|===



[.small]#Created with https://www.mrdocs.com[MrDocs]#
