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pub fn IdentityContext(comptime Key: type) type {
return struct {
pub fn hash(_: @This(), key: Key) u64 {
return key;
}
pub fn eql(_: @This(), a: Key, b: Key) bool {
return a == b;
}
};
}
/// When storing hashes as keys in a hash table, we don't want to hash the hashes or else we increase the chance of collisions. This is also marginally faster since it means hashing less stuff.
/// `ArrayIdentityContext` and `IdentityContext` are distinct because ArrayHashMap expects u32 hashes but HashMap expects u64 hashes.
pub const ArrayIdentityContext = struct {
pub fn hash(_: @This(), key: u32) u32 {
return key;
}
pub fn eql(_: @This(), a: u32, b: u32) bool {
return a == b;
}
};
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