Constructor

Synopsis

Declared in <boost/url/param.hpp>

template<class OptionalString>
param(
    core::string_view key,
    OptionalString const& value);

Description

This constructs a parameter with a key and value.

No validation is performed on the strings. Ownership of the key and value is acquired by making copies.

Example

param qp( "key", "value" );
param qp( "key", optional<core::string_view>("value") );
param qp( "key", boost::none );
param qp( "key", nullptr );
param qp( "key", no_value );

Postconditions

this->key == key && this->value == value && this->has_value == true

Complexity

Linear in key.size() + value.size().

Exception Safety

Calls to allocate may throw.

Template Parameters

Name

Description

OptionalString

An optional string type, such as core::string_view, std::nullptr, no_value_t, or optional<core::string_view>.

Parameters

Name

Description

key

The key to set.

value

The value to set.

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