boost::urls::params_encoded_base::count

Return the number of matching keys

Synopsis

Declared in <include/boost/url/params_encoded_base.hpp>


std::size_t
count(
    pct_string_view key,
    ignore_case_param ic = = {}) const noexcept;

Description

This function examines the parameters in the container to find the number of matches for the specified key, which may contain percent escapes. The comparison is performed as if all escaped characters were decoded first.


assert( url_view( "?first=John&last=Doe" ).encoded_params().count( "first" ) == 1 );

Linear in `this->buffer().size()`.

Exceptions thrown on invalid input.

Exceptions

Name	Thrown on
`key`	contains an invalid percent-encoding.

Parameters

Name	Description
key	The key to match. By default, a case-sensitive comparison is used.
ic	An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive.