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class

keyhammer::cost

Function class 

Source 
pub fn class(b: u8) -> u64
Expand description

The class of the byte b read as the code point U+0000 to U+00FF: the same as symbol_class(b.into()). For ASCII that is bit b & 63.

ยงExamples

use keyhammer::cost::class;

assert_ne!(class(b'a'), class(b'b'));
assert_eq!(class(b'a'), class(b'!')); // 97 and 33 are equal modulo 64