Rekai Nyangadzayi Musuka 8e89cc5f4f | ||
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.github/workflows | ||
src | ||
.gitignore | ||
README.md | ||
build.zig | ||
build.zig.zon |
README.md
Hash Array Mapped Trie
A barebones implementation of this paper by Phil Bagwell.
Usage
As an example:
const std = @import("std");
const expectEqual = std.testing.expectEqual;
const HashArrayMappedTrie = @import("hamt").HashArrayMappedTrie;
const StringTrie = HashArrayMappedTrie([]const u8, void, StringContext);
const StringContext = struct {
// Note: This definition is *required*
// TODO: I could just grab the @typeInfo(HashFn).Fn.return_type right?
pub const Digest = u64;
pub inline fn hash(key: []const u8) Digest {
return std.hash.Wyhash.hash(0, key);
}
pub inline fn eql(left: []const u8, right: []const u8) bool {
return std.mem.eql(u8, left, right);
}
};
test {
const Pair = StringTrie.Pair;
const allocator = std.testing.allocator;
var trie = try StringTrie.init(allocator);
defer trie.deinit(allocator);
try trie.insert(allocator, "hello", {});
try expectEqual(@as(?Pair, .{ .key = "hello", .value = {} }), trie.search("hello"));
try expectEqual(@as(?Pair, null), trie.search("world"));
}
Building
Build in release mode with zig build -Doptimzie=ReleaseSafe
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