:relfileprefix: ../../../
[#7A1E417876CB8CBDC1B8463B6A8DED6C40199D3C]

= Function url_view_base::is_path_absolute

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


== Synopsis

Declared in header `</boost/url/url_view_base.hpp#L1611[boost/url/url_view_base.hpp,window=blank_]>`

[source,cpp,subs="verbatim,macros,-callouts"]
----
bool
is_path_absolute() const noexcept;
----

== Description

pass:v,q[This function returns true if the path] pass:v,q[begins with a forward slash ('/').]

=== Example
[,cpp]
----
assert( url_view( "/path/to/file.txt" ).is_path_absolute() );
----

=== Complexity
pass:v,q[Constant.]

=== Exception Safety
pass:v,q[Throws nothing.]

=== 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`