[#boost-urls-url-set_encoded_user]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/url.adoc[url]::set&lowbar;encoded&lowbar;user
:relfileprefix: ../../../
:mrdocs:


Set the user

== Synopsis


Declared in `&lt;https://www.github.com/boostorg/url/blob/develop/include/boost/url/url.hpp#L430[boost&sol;url&sol;url&period;hpp]&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:boost/urls/url.adoc[url]&
set&lowbar;encoded&lowbar;user(xref:boost/urls/pct_string_view.adoc[pct&lowbar;string&lowbar;view] s);
----

== Description


This function sets the user part of the        userinfo the the string, which may        contain percent&hyphen;escapes&period;        Escapes in the string are preserved,        and reserved characters in the string        are percent&hyphen;escaped in the result&period;


=== Example

[,cpp]
----
assert( url().set_encoded_user("john%20doe").userinfo() == "john doe" );
----

=== Postconditions

[,cpp]
----
this->has_authority() == true && this->has_userinfo() == true
----

=== Complexity

Linear in `this&hyphen;&gt;size() &plus; s&period;size()`&period;


=== Exception Safety

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


=== BNF

[,cpp]
----
userinfo      = [ [ user ] [ ':' password ] ]

user          = *( unreserved / pct-encoded / sub-delims )
password      = *( unreserved / pct-encoded / sub-delims / ":" )
----

=== Specification

* link:https://datatracker.ietf.org/doc/html/rfc3986#section-3.2.1[            3&period;2&period;1&period; User Information (rfc3986)]



== Exceptions


|===
| Name | Thrown on

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


|===

== Parameters


|===
| Name | Description

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


|===

== See Also


xref:boost/urls/url_base/remove_password.adoc[remove&lowbar;password],            xref:boost/urls/url_base/set_encoded_password.adoc[set&lowbar;encoded&lowbar;password],            xref:boost/urls/url_base/set_password.adoc[set&lowbar;password],            xref:boost/urls/url_base/set_user.adoc[set&lowbar;user]&period;






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