Boost C++ Libraries

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This is an older version of Boost and was released in 2018. The current version is 1.92.0.

http::is_fields

http::is_fields

Determine if T meets the requirements of Fields.

Synopsis

Defined in header <boost/beast/http/type_traits.hpp>

template<
    class T>
struct is_fields :
    public std::integral_constant< bool,...>

Description

Template Parameters

Type	Description
`T`	The body type to test.

Example

Use with static_assert:

template<bool isRequest, class Body, class Fields>
void f(message<isRequest, Body, Fields> const&)
{
    static_assert(is_fields<Fields>::value,
        "Fields requirements not met");
...

Use with std::enable_if (SFINAE):

template<bool isRequest, class Body, class Fields>
typename std::enable_if<is_fields<Fields>::value>::type
f(message<isRequest, Body, Fields> const&);

Convenience header <boost/beast/http.hpp>