Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is the documentation for a snapshot of the master branch, built from commit 7789ef3d8d.
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param_view::param_view (2 of 3 overloads)

Constructor.

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

This constructs a parameter with a key and value. No validation is performed on the strings. 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_view qp( "key" , "value" );
Postconditions
this->key.data() == key.data() && this->value.data() == value.data() && this->has_value == true
Complexity

Constant.

Exception Safety

Throws nothing.

Template Parameters

Type

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, value

The key and value to set.


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