Constructor

Synopsis

Declared in <boost/url/param.hpp>

template<class OptionalString>
param_pct_view(
    pct_string_view key,
    OptionalString const& value);

Description

This constructs a parameter with a key and optional value, which may both contain percent escapes.

The new key and value reference the same corresponding underlying character buffers.

Ownership of the buffers is not transferred; the caller is responsible for ensuring that the assigned buffers remain valid until they are no longer referenced.

Example

param_pct_view qp( "key", optional<core::string_view>("value") );

Postconditions

this->key.data() == key.data() && this->value->data() == value->data() && this->has_value == true

Complexity

Linear in key.size() + value‐>size().

Exception Safety

Exceptions thrown on invalid input.

Exceptions

Name

Thrown on

system_error

key or value contains an invalid percent‐encoding.

Return Value

A param object

Template Parameters

Name

Description

OptionalString

An optional core::string_view type, such as boost::optional<core::string_view> or std::optional<core::string_view>.

Parameters

Name

Description

key

The key to set.

value

The optional value to set.

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