feat: add hashbrown

Cargo.lock

@@ -2,6 +2,17 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "ahash"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf6ccdb167abbf410dcb915cabd428929d7f6a04980b54a11f26a39f1c7f7107"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+ "version_check",
+]
+
 [[package]]
 name = "aho-corasick"
 version = "0.7.20"
@@ -16,6 +27,7 @@ name = "aoc"
 version = "0.1.0"
 dependencies = [
  "dotenv",
+ "hashbrown 0.13.1",
  "hex-literal",
  "itertools",
  "lazy_static",
@@ -228,6 +240,15 @@ version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
 
+[[package]]
+name = "hashbrown"
+version = "0.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "33ff8ae62cd3a9102e5637afc8452c55acf3844001bd5374e0b0bd7b6616c038"
+dependencies = [
+ "ahash",
+]
+
 [[package]]
 name = "hermit-abi"
 version = "0.1.19"
@@ -331,7 +352,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1885e79c1fc4b10f0e172c475f458b7f7b93061064d98c3293e98c5ba0c8b399"
 dependencies = [
  "autocfg",
- "hashbrown",
+ "hashbrown 0.12.3",
 ]
 
 [[package]]
@@ -932,6 +953,12 @@ version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
 
+[[package]]
+name = "version_check"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
+
 [[package]]
 name = "want"
 version = "0.3.0"

Cargo.toml

@@ -9,6 +9,7 @@ default-run = "aoc"
 
 [dependencies]
 dotenv = "0.15.0"
+hashbrown = "0.13.1"
 hex-literal = "0.3.4"
 itertools = "0.10.5"
 lazy_static = "1.4.0"

src/bin/03.rs

@@ -1,4 +1,4 @@
-use std::collections::HashSet;
+use hashbrown::HashSet;
 
 use itertools::Itertools;
 

src/bin/06.rs

@@ -1,4 +1,4 @@
-use std::collections::HashMap;
+use hashbrown::HashMap;
 
 use lazy_static::lazy_static;
 use regex::Regex;