# array-bytes
### A Collection of Array/Bytes/Hex Utilities.
[](https://www.gnu.org/licenses/gpl-3.0)
[](https://github.com/hack-ink/array-bytes/actions/workflows/checks.yml)
[](https://docs.rs/array-bytes)
[](https://github.com/hack-ink/array-bytes/tags)
[](https://github.com/hack-ink/array-bytes)
[](https://github.com/hack-ink/array-bytes)
Abilities
TryFromHex trait
- Convert
Hex to Num
- type
&str -> isize
- type
&str -> i8
- type
&str -> i16
- type
&str -> i32
- type
&str -> i64
- type
&str -> i128
- type
&str -> usize
- type
&str -> u8
- type
&str -> u16
- type
&str -> u32
- type
&str -> u64
- type
&str -> u128
bytes prefixed functions
hex prefixed functions
- Convert
HexBytes to Hex
- type
&[u8] -> &str
- e.g.
b"0x..." -> "0x..."
- Build fixed length
Array from Hex
- Convert
Hex to Bytes
- Transform
Hex to T
- type
&str -> T
- e.g.
"0x..." -> [u8; 20] -> H160
slice prefixed functions
- Build fixed length
Array from Slice
- Transform
Slice to G
- type
&[T] -> G
- e.g.
&[0_u8, ...] -> [u8; 20] -> H160
vec prefixed functions
- Build fixed length
Array from Vec
- Transform
Vec to G
- type
Vec<T> -> G
- e.g.
vec![0_u8, ...] -> [u8; 20] -> H160
Serde support (require feature serde)
#[serde(deserialize_with = "array_bytes::hex_deserialize_n_into")]
- type
S -> T
- e.g.
"0x..." -> H160
#[serde(deserialize_with = "array_bytes::de_hex2num")]
- type
S -> Num
- e.g.
"0xA" -> 10_u32
#[serde(deserialize_with = "array_bytes::de_hex2bytes")]
- type
S -> Vec<u8>
- e.g.
"0x00" -> vec![0_u8]
Benchmark results
Friday, September 9, 2022
```rs
array_bytes::bytes2hex time: [37.577 µs 37.755 µs 37.914 µs]
change: [+0.1343% +0.9208% +1.7020%] (p = 0.03 < 0.05)
Change within noise threshold.
hex::encode time: [56.832 µs 57.056 µs 57.258 µs]
change: [-0.3311% +0.1929% +0.7251%] (p = 0.47 > 0.05)
No change in performance detected.
Found 1 outliers among 100 measurements (1.00%)
1 (1.00%) low mild
rustc_hex::to_hex time: [33.522 µs 33.611 µs 33.690 µs]
change: [+0.0534% +0.4709% +0.9031%] (p = 0.03 < 0.05)
Change within noise threshold.
Found 10 outliers among 100 measurements (10.00%)
10 (10.00%) low mild
faster_hex::hex_string time: [7.7683 µs 7.8169 µs 7.8819 µs]
change: [+3.7564% +4.6695% +5.6205%] (p = 0.00 < 0.05)
Performance has regressed.
Found 14 outliers among 100 measurements (14.00%)
5 (5.00%) low severe
5 (5.00%) low mild
1 (1.00%) high mild
3 (3.00%) high severe
faster_hex::hex_encode_fallback
time: [7.7536 µs 7.7740 µs 7.7936 µs]
change: [+1.3656% +1.9964% +2.6314%] (p = 0.00 < 0.05)
Performance has regressed.
Found 2 outliers among 100 measurements (2.00%)
2 (2.00%) low mild
array_bytes::hex2bytes time: [136.78 µs 137.66 µs 138.57 µs]
change: [+0.1075% +0.8175% +1.5436%] (p = 0.02 < 0.05)
Change within noise threshold.
Found 6 outliers among 100 measurements (6.00%)
5 (5.00%) low mild
1 (1.00%) high severe
array_bytes::hex2bytes_unchecked
time: [103.12 µs 103.49 µs 103.82 µs]
change: [-0.7568% -0.2119% +0.3349%] (p = 0.44 > 0.05)
No change in performance detected.
Found 6 outliers among 100 measurements (6.00%)
2 (2.00%) low severe
4 (4.00%) low mild
hex::decode time: [105.65 µs 106.15 µs 106.65 µs]
change: [-1.4824% -0.9722% -0.4135%] (p = 0.00 < 0.05)
Change within noise threshold.
Found 2 outliers among 100 measurements (2.00%)
1 (1.00%) low mild
1 (1.00%) high mild
rustc_hex::from_hex time: [66.218 µs 66.473 µs 66.750 µs]
change: [-0.0431% +0.6585% +1.4552%] (p = 0.08 > 0.05)
No change in performance detected.
Found 9 outliers among 100 measurements (9.00%)
1 (1.00%) low severe
2 (2.00%) low mild
4 (4.00%) high mild
2 (2.00%) high severe
faster_hex::hex_decode time: [16.136 µs 16.211 µs 16.324 µs]
change: [-2.4694% -1.9531% -1.4089%] (p = 0.00 < 0.05)
Performance has improved.
Found 7 outliers among 100 measurements (7.00%)
2 (2.00%) low mild
2 (2.00%) high mild
3 (3.00%) high severe
faster_hex::hex_decode_unchecked
time: [6.7977 µs 6.8215 µs 6.8475 µs]
change: [-1.4235% -0.5587% +0.2182%] (p = 0.20 > 0.05)
No change in performance detected.
Found 5 outliers among 100 measurements (5.00%)
1 (1.00%) low mild
3 (3.00%) high mild
1 (1.00%) high severe
faster_hex::hex_decode_fallback
time: [6.7799 µs 6.8003 µs 6.8209 µs]
change: [-1.9470% -1.3817% -0.8203%] (p = 0.00 < 0.05)
Change within noise threshold.
Found 4 outliers among 100 measurements (4.00%)
4 (4.00%) high mild
```