:relfileprefix: ../../../
[#boost-urls-grammar-find_if]

== xref:boost.adoc[pass:[boost]]::xref:boost/urls.adoc[pass:[urls]]::xref:boost/urls/grammar.adoc[pass:[grammar]]::find_if


Find the first character in the string that is in the set.


=== Synopsis

Declared in header `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/grammar/charset.hpp#L87[boost/url/grammar/charset.hpp,window=blank_]>`

[source,cpp,subs="verbatim,macros,-callouts"]
----
template<class CharSet>
char const*
find_if(
    char const const* first,
    char const const* last,
    CharSet const& cs) noexcept;
----

=== Description


=== Throws nothing.




=== Return Value


A pointer to the found character,
otherwise the value `last`.



=== Parameters

|===
| Name | Description 

| *first*
| 
A pointer to the first character
in the string to search.

| *last*
| 
A pointer to one past the last
character in the string to search.

| *cs*
| 
The character set to use.

|===




=== See Also


xref:boost/urls/grammar/find_if_not.adoc[find_if_not]
.