[#boost-urls-decode_view-starts_with-0b]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/decode_view.adoc[decode_view]::starts_with
:relfileprefix: ../../../
:mrdocs:


Checks if the string begins with the given prefix

== Synopsis


Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/decode_view.hpp#L382[boost/url/decode_view.hpp]>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
starts_with(char ch) const noexcept;
----

== Description



=== Example

[,cpp]
----
assert( decode_view( "Program%20Files" ).starts_with('P') );
----

=== Complexity

Constant.


=== Exception Safety

Throws nothing.





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