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This is the documentation for a snapshot of the master branch, built from commit 9fc5439165.
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params_ref::count

(Inherited from params_base)

Return the number of matching keys.

Synopsis
std::size_t
count(
    string_view key,
    ignore_case_param ic = {}) const;
Description

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

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

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

Exception Safety

Throws nothing.

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 will be case-insensitive.


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