array-bytes

A Collection of Array/Bytes/Hex Utilities.

Abilities

TryFromHex trait

• Convert hex to num
  • type AsRef<[u8]> -> isize
  • type AsRef<[u8]> -> i8
  • type AsRef<[u8]> -> i16
  • type AsRef<[u8]> -> i32
  • type AsRef<[u8]> -> i64
  • type AsRef<[u8]> -> i128
  • type AsRef<[u8]> -> usize
  • type AsRef<[u8]> -> u8
  • type AsRef<[u8]> -> u16
  • type AsRef<[u8]> -> u32
  • type AsRef<[u8]> -> u64
  • type AsRef<[u8]> -> u128
• Convert hex to array
  • type AsRef<[u8]> -> [u8; N]
  • type AsRef<[u8]> -> SmallVec<[u8; 64]>
  • type AsRef<[u8]> -> Vec<u8>

Hex trait

• Convert num to hex
  • type isize -> String
  • type i8 -> String
  • type i16 -> String
  • type i32 -> String
  • type i64 -> String
  • type i128 -> String
  • type usize -> String
  • type u8 -> String
  • type u16 -> String
  • type u32 -> String
  • type u64 -> String
  • type u128 -> String
• Convert array to hex
  • type [u8; N] -> String
  • type &[u8; N] -> String
  • type &[u8] -> String
  • type Vec<u8> -> String
  • type &Vec<u8> -> String

slice prefixed functions

• Build fixed length Array from Slice
  • type &[T] -> [T; N]
  • type &[T] -> &[T; N]
• Transform Slice to G
  • type &[T] -> G
  • e.g. &[0_u8, ...] -> [u8; 20] -> H160

prefix and suffix functions

• Prefixes/suffixes the given element to the given slice to make it a fixed-size array of length N.

bytes prefixed functions

• Convert bytes to hex
  • type AsRef<[u8]> -> String

hex prefixed functions

• Convert HexBytes to hex
  • type &[u8] -> &str
  • e.g. b"0x..." -> "0x..."
• Transform hex from Array
  • type &str -> [u8; N]
• Convert hex to bytes
  • type AsRef<[u8]> -> SmallVec<[u8; 64]>
• Convert hex to Slice
  • type AsRef<[u8]> -> &[u8]
• Transform hex to T
  • type AsRef<[u8]> -> T
  • e.g. "0x..." -> [u8; 20] -> H160

vec prefixed functions

• Build fixed length Array from Vec
  • type Vec<T> -> [T; N]
• 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_try_from_hex")]
  • type S -> impl TryFromHex
  • e.g. "0xA" -> 10_u32
• #[serde(serialize_with = "array_bytes::ser_hex/array_bytes::ser_hex_without_prefix")]
  • type S -> impl Hex
  • e.g. "0x00" -> vec![0_u8]

Benchmark results

array_bytes::bytes2hex  time:   [11.175 µs 11.198 µs 11.219 µs]
const_hex::encode       time:   [1.2195 µs 1.2381 µs 1.2564 µs]
faster_hex::hex_string  time:   [12.058 µs 12.089 µs 12.123 µs]
faster_hex::hex_encode_fallback
                        time:   [12.055 µs 12.095 µs 12.135 µs]
hex::encode             time:   [73.787 µs 75.290 µs 76.798 µs]
rustc_hex::to_hex       time:   [43.948 µs 44.517 µs 45.504 µs]

array_bytes::hex2bytes  time:   [19.294 µs 19.383 µs 19.500 µs]
array_bytes::hex2bytes_unchecked
                        time:   [19.507 µs 19.666 µs 19.850 µs]
array_bytes::hex2slice  time:   [23.608 µs 24.087 µs 24.598 µs]
array_bytes::hex2slice_unchecked
                        time:   [21.853 µs 22.428 µs 23.048 µs]
const_hex::decode       time:   [13.999 µs 14.018 µs 14.037 µs]
faster_hex::hex_decode  time:   [28.983 µs 29.028 µs 29.075 µs]
faster_hex::hex_decode_unchecked
                        time:   [11.908 µs 11.926 µs 11.947 µs]
faster_hex::hex_decode_fallback
                        time:   [11.909 µs 11.924 µs 11.940 µs]
hex::decode             time:   [96.566 µs 99.398 µs 102.23 µs]
hex::decode_to_slice    time:   [41.424 µs 42.312 µs 43.448 µs]

License

Licensed under either of Apache-2.0 or GPL-3.0 at your option.