:relfileprefix: ../../../
[#AE0163C3D5BAACC8E011890639530388B24821D1]

= Function params_base::begin

pass:v,q[Return an iterator to the beginning]


== Synopsis

Declared in header `</boost/url/params_base.hpp#L218[boost/url/params_base.hpp,window=blank_]>`

[source,cpp,subs="verbatim,macros,-callouts"]
----
xref:boost/urls/params_base/iterator.adoc[iterator]
begin() const noexcept;
----

== Description


=== Complexity
pass:v,q[Linear in the size of the first param.]

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



== Return Value

* `iterator`