### can_query

A type trait that determines whether a `query` expression is well-formed.

    template<
        typename T,
        typename Property>
    struct can_query :
      public integral_constant< bool, automatically_determined >

Class template `can_query` is a trait that is derived from `true_type` if the expression `asio::query(std::declval<T>(), std::declval<Property>())` is well formed; otherwise `false_type`.

##### Requirements

Header: `asio/query.hpp`

Convenience header: `asio.hpp`