count

Return the number of matching keys

Synopsis

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

Declared in file <include/boost/url/params_encoded_base.hpp> on line 304

Defined in file <src/params_encoded_base.cpp> on line 97

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.

Example

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

Complexity

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

Exception Safety

Exceptions thrown on invalid input.