Andrew Kelley cf88cf2657 std: make ArrayHashMap eql function accept an additional param ... which is the index of the key that already exists in the hash map. This enables the use case of using `AutoArrayHashMap(void, void)` which may seem surprising at first, but is actually pretty handy! This commit includes a proof-of-concept of how I want to use it, with a new InternArena abstraction for stage2 that provides a compact way to store values (and types) in an "internment arena", thus making types stored exactly once (per arena), representable with a single u32 as a reference to a type within an InternArena, and comparable with a simple u32 integer comparison. If both types are in the same InternArena, you can check if they are equal by seeing if their index is the same. What's neat about `AutoArrayHashMap(void, void)` is that it allows us to look up the indexes by key, *without actually storing the keys*. Instead, keys are treated as ephemeral values that are constructed as needed. As a result, we have an extremely efficient encoding of types and values, represented only by three arrays, which has no pointers, and can therefore be serialized and deserialized by a single writev/readv call. The `map` field is denormalized data and can be computed from the other two fields. This is in contrast to our current Type/Value system which makes extensive use of pointers. The test at the bottom of InternArena.zig passes in this commit.		2022-01-31 01:20:45 -07:00
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adler.zig	remove redundant license headers from zig standard library	2021-08-24 12:25:09 -07:00
auto_hash.zig	std: make ArrayHashMap eql function accept an additional param	2022-01-31 01:20:45 -07:00
benchmark.zig	allocgate: renamed getAllocator function to allocator	2021-11-30 23:32:47 +00:00
cityhash.zig	migrate from std.Target.current to @import("builtin").target	2021-10-04 23:48:55 -07:00
crc.zig	migrate from std.Target.current to @import("builtin").target	2021-10-04 23:48:55 -07:00
fnv.zig	remove redundant license headers from zig standard library	2021-08-24 12:25:09 -07:00
murmur.zig	remove redundant license headers from zig standard library	2021-08-24 12:25:09 -07:00
wyhash.zig	remove redundant license headers from zig standard library	2021-08-24 12:25:09 -07:00