[#boost-urls-grammar-string_view_base-find_first_of-047]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/grammar.adoc[grammar]::xref:boost/urls/grammar/string_view_base.adoc[string_view_base]::find_first_of
:relfileprefix: ../../../../
:mrdocs:

Return the position of the first match

== Synopses

Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/grammar/string_view_base.hpp#L707[boost/url/grammar/string_view_base.hpp]>`

Return the position of the first match


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
xref:boost/urls/grammar/string_view_base/size_type.adoc[size_type]
xref:boost/urls/grammar/string_view_base/find_first_of-0ab.adoc[find_first_of](
    core::string_view str,
    xref:boost/urls/grammar/string_view_base/size_type.adoc[size_type] pos = 0) const noexcept;
----

[.small]#xref:boost/urls/grammar/string_view_base/find_first_of-0ab.adoc[_» more..._]#

Return the position of the first match


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
xref:boost/urls/grammar/string_view_base/size_type.adoc[size_type]
xref:boost/urls/grammar/string_view_base/find_first_of-04d.adoc[find_first_of](
    char c,
    xref:boost/urls/grammar/string_view_base/size_type.adoc[size_type] pos = 0) const noexcept;
----

[.small]#xref:boost/urls/grammar/string_view_base/find_first_of-04d.adoc[_» more..._]#

Return the position of the first match


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
xref:boost/urls/grammar/string_view_base/size_type.adoc[size_type]
xref:boost/urls/grammar/string_view_base/find_first_of-08.adoc[find_first_of](
    char const* s,
    xref:boost/urls/grammar/string_view_base/size_type.adoc[size_type] pos = 0) const noexcept;
----

[.small]#xref:boost/urls/grammar/string_view_base/find_first_of-08.adoc[_» more..._]#

Return the position of the first match


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
xref:boost/urls/grammar/string_view_base/size_type.adoc[size_type]
xref:boost/urls/grammar/string_view_base/find_first_of-0af.adoc[find_first_of](
    char const* s,
    xref:boost/urls/grammar/string_view_base/size_type.adoc[size_type] pos,
    xref:boost/urls/grammar/string_view_base/size_type.adoc[size_type] n) const noexcept;
----

[.small]#xref:boost/urls/grammar/string_view_base/find_first_of-0af.adoc[_» more..._]#

== Return Value

The position of the first match

== Parameters

[cols=2]
|===
| Name
| Description
| *str*
| The characters to search for
| *pos*
| The position to start searching from
| *c*
| The character to search for
| *s*
| The characters to search for
| *n*
| The number of characters to search for
|===


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