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Nate Cook 7a4e0a32f6 [stdlib] Revise documentation

This includes various revisions to the APIs landing in Swift 4.2, including:
- Random and other randomness APIs
- Hashable changes
- MemoryLayout.offset(of:)

2018-05-18 11:31:54 -05:00

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Random APIs

Platform-Specific Default Random

The implementation of the default random generator varies by platform. The implementation on each platform must be thread-safe and automatically seeded, and should be cryptographically secure to the extent possible. Currently supported platforms have the following implementation details:

Apple platforms use arc4random_buf(3).
Linux, FreeBSD, and other UNIX-like platforms use getrandom(2) when available; otherwise, they read from /dev/urandom.
Fuchsia platforms use getentropy(3).
Windows paltforms use BCryptGenRandom.

623 B Raw Blame History

Random APIs

Platform-Specific Default Random

623 B

Raw Blame History