add basic exchange util
Signed-off-by: Jason Volk <jason@zemos.net>
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1 changed files with 8 additions and 0 deletions
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@ -26,8 +26,16 @@ pub use string::{str_from_bytes, string_from_bytes};
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pub use sys::available_parallelism;
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pub use sys::available_parallelism;
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pub use time::now_millis as millis_since_unix_epoch;
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pub use time::now_millis as millis_since_unix_epoch;
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#[inline]
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pub fn clamp<T: Ord>(val: T, min: T, max: T) -> T { cmp::min(cmp::max(val, min), max) }
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pub fn clamp<T: Ord>(val: T, min: T, max: T) -> T { cmp::min(cmp::max(val, min), max) }
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#[inline]
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pub fn exchange<T: Clone>(state: &mut T, source: T) -> T {
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let ret = state.clone();
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*state = source;
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ret
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}
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#[must_use]
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#[must_use]
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pub fn generate_keypair() -> Vec<u8> {
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pub fn generate_keypair() -> Vec<u8> {
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let mut value = rand::string(8).as_bytes().to_vec();
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let mut value = rand::string(8).as_bytes().to_vec();
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