Platform

One set of names for files, errors, sockets, threads, mutexes, virtual memory and the clock on Windows and Linux.

Name	Description
`Functions and constants` functions	Free functions and constants of Platform.
`Error` alias	Names and predicates for the platform's error codes.
`ErrorCode` alias	An error code of the platform; `Error::Success` on success.
`ErrorException` alias	Carries an error of the platform out of code that has no error return.
`File` alias	Owns one open file of the platform.
`FileAccess` enum	What the opener may do with the file.
`FileCreation` enum	What happens when the file exists, or does not.
`FileOptions` struct	How to open a file, on every platform alike.
`Mutex` class	A lock of the operating system, held for short sections.
`MutexGuard` class	Holds a `Mutex` for a scope.
`Socket` alias	Owns one socket of the platform.
`SocketError` alias	Names and predicates of the socket error codes: Winsock's on Windows, `errno` elsewhere.
`SocketShutdown` struct	Which side `Shutdown` ends: `SD_RECEIVE`/`SD_SEND`/`SD_BOTH` on Windows, `SHUT_RD`/`SHUT_WR`/`SHUT_RDWR` elsewhere.
`VirtualMemory` alias	Reserved address space with pages committed and decommitted on demand.