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This includes various revisions to the APIs landing in Swift 4.2, including: - Random and other randomness APIs - Hashable changes - MemoryLayout.offset(of:)
17 lines
623 B
Markdown
17 lines
623 B
Markdown
# Random APIs
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More documentation to come.
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## Platform-Specific Default Random
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The implementation of the default random generator varies by platform. The implementation
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on each platform must be thread-safe and automatically seeded, and should be
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cryptographically secure to the extent possible. Currently supported platforms have the
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following implementation details:
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- Apple platforms use `arc4random_buf(3)`.
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- Linux, FreeBSD, and other UNIX-like platforms use `getrandom(2)` when available;
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otherwise, they read from `/dev/urandom`.
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- Fuchsia platforms use `getentropy(3)`.
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- Windows paltforms use `BCryptGenRandom`.
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