ClickHouse/src/Functions/castTypeToEither.h

#pragma once

#include <Common/typeid_cast.h>

namespace DB
{

template <typename... Ts, typename T, typename F>
static bool castTypeToEither(const T * type, F && f)
{
    /// XXX can't use && here because gcc-7 complains about parentheses around && within ||
    return ((typeid_cast<const Ts *>(type) ? f(*typeid_cast<const Ts *>(type)) : false) || ...);
}

}
Every function in its own file, part 7 (#3666) * Every function in its own file, part 7 [#CLICKHOUSE-2] * Every function in its own file, part 7 [#CLICKHOUSE-2] * Every function in its own file, part 7 [#CLICKHOUSE-2] * Every function in its own file, part 7 [#CLICKHOUSE-2] * Every function in its own file, part 7 [#CLICKHOUSE-2] * Fixed build #3666 2018-11-26 16:20:40 +00:00			`#pragma once`

			`#include <Common/typeid_cast.h>`

			`namespace DB`
			`{`

Attempt to improve performance of datetime interval functions 2020-02-24 15:42:40 +00:00			`template <typename... Ts, typename T, typename F>`
			`static bool castTypeToEither(const T * type, F && f)`
Every function in its own file, part 7 (#3666) * Every function in its own file, part 7 [#CLICKHOUSE-2] * Every function in its own file, part 7 [#CLICKHOUSE-2] * Every function in its own file, part 7 [#CLICKHOUSE-2] * Every function in its own file, part 7 [#CLICKHOUSE-2] * Every function in its own file, part 7 [#CLICKHOUSE-2] * Fixed build #3666 2018-11-26 16:20:40 +00:00			`{`
			`/// XXX can't use && here because gcc-7 complains about parentheses around && within \|\|`
			`return ((typeid_cast<const Ts >(type) ? f(typeid_cast<const Ts *>(type)) : false) \|\| ...);`
			`}`

			`}`