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Merge pull request #71 from tnull/2022-09-improve-hex-utils
author
Matt Corallo
<649246+TheBlueMatt@users.noreply.github.com>
Thu, 15 Sep 2022 20:02:12 +0000
(20:02 +0000)
committer
GitHub
<noreply@github.com>
Thu, 15 Sep 2022 20:02:12 +0000
(20:02 +0000)
Small improvements of `hex_utils`
src/hex_utils.rs
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diff --git
a/src/hex_utils.rs
b/src/hex_utils.rs
index 6077a60c52fe5b19b61c4492ce1d07af4cd77e8c..8b853dbb6330826132096a7c2c55f204592be486 100644
(file)
--- a/
src/hex_utils.rs
+++ b/
src/hex_utils.rs
@@
-1,4
+1,5
@@
use bitcoin::secp256k1::PublicKey;
+use std::fmt::Write;
pub fn to_vec(hex: &str) -> Option<Vec<u8>> {
let mut out = Vec::with_capacity(hex.len() / 2);
@@
-23,9
+24,9
@@
pub fn to_vec(hex: &str) -> Option<Vec<u8>> {
#[inline]
pub fn hex_str(value: &[u8]) -> String {
- let mut res = String::with_capacity(
64
);
+ let mut res = String::with_capacity(
2 * value.len()
);
for v in value {
-
res += &format!("{:02x}", v
);
+
write!(&mut res, "{:02x}", v).expect("Unable to write"
);
}
res
}