[#boost-urls-segments_encoded_ref-replace-07]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/segments_encoded_ref.adoc[segments&lowbar;encoded&lowbar;ref]::replace
:relfileprefix: ../../../
:mrdocs:


Replace segments

== Synopsis


Declared in `&lt;https://www.github.com/boostorg/url/blob/develop/include/boost/url/segments_encoded_ref.hpp#L590[boost&sol;url&sol;segments&lowbar;encoded&lowbar;ref&period;hpp]&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:boost/urls/segments_encoded_base/iterator.adoc[iterator]
replace(
    xref:boost/urls/segments_encoded_base/iterator.adoc[iterator] pos,
    xref:boost/urls/pct_string_view.adoc[pct&lowbar;string&lowbar;view] s);
----

== Description


This function replaces the segment at        the specified position&period;        Reserved characters in the string are        automatically escaped&period;        Escapes in the string are preserved&period;

All iterators that are equal to        `pos` or come after are invalidated&period;


=== Complexity

Linear in `s&period;size() &plus; this&hyphen;&gt;url()&period;encoded&lowbar;resouce()&period;size()`&period;


=== Exception Safety

Strong guarantee&period;        Calls to allocate may throw&period;



== Return Value


An iterator to the replaced segment&period;



== Parameters


|===
| Name | Description

| *pos*
| An iterator to the segment&period;


| *s*
| The string to assign&period;


|===



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