Find a matching key

Synopsis

Declared in header </boost/url/params_base.hpp#L473[boost/url/params_base.hpp,window=blank_]>

iterator
find_last(
    iterator before,
    string_view key,
    ignore_case_param ic = = {}) const noexcept;

Description

This function examines the parameters in the container to find a match for the specified key. The comparison is performed as if all escaped characters were decoded first. The search starts prior to before and proceeds backwards until either the key is found or the beginning of the range is reached, in which case end() is returned.

Example

url_view u( "?First=John&Last=Doe" );

assert( u.params().find_last( "last" ) != u.params().find_last( "last", ignore_case ) );

Complexity

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

Return Value

  • iterator

Parameters

Name Type

before

iterator

key

string_view

ic

ignore_case_param