:relfileprefix: ../../../
[#0470C741E7F493FF2F77742C90BC93AECBFBF831]

= Function url_base::set_path_absolute

pass:v,q[Set if the path is absolute]


== Synopsis

Declared in header `</boost/url/url_base.hpp#L1665[boost/url/url_base.hpp,window=blank_]>`

[source,cpp,subs="verbatim,macros,-callouts"]
----
bool
set_path_absolute(bool absolute);
----

== Description

pass:v,q[This function adjusts the path to make] pass:v,q[it absolute or not, depending on the]
pass:v,q[parameter.]
[NOTE]
pass:v,q[If an authority is present, the path]
pass:v,q[is always absolute. In this case, the]
pass:v,q[function has no effect.]

=== Example
[,cpp]
----
url u( "path/to/file.txt" );
assert( u.set_path_absolute( true ) );
assert( u.buffer() == "/path/to/file.txt" );
----

=== Postconditions
[,cpp]
----
this->is_path_absolute() == true && this->encoded_path().front() == '/'
----

=== Complexity
pass:v,q[Linear in `this->size()`.]

=== BNF
[,cpp]
----
path          = path-abempty    ; begins with "/" or is empty
              / path-absolute   ; begins with "/" but not "//"
              / path-noscheme   ; begins with a non-colon segment
              / path-rootless   ; begins with a segment
              / path-empty      ; zero characters

path-abempty  = *( "/" segment )
path-absolute = "/" [ segment-nz *( "/" segment ) ]
path-noscheme = segment-nz-nc *( "/" segment )
path-rootless = segment-nz *( "/" segment )
path-empty    = 0<pchar>
----

=== Specification

* link:https://datatracker.ietf.org/doc/html/rfc3986#section-3.3[3.3.  Path (rfc3986)]



== Return Value

* `bool` 


== Parameters

|===
| Name | Type 

| *absolute*
| `bool`

|===