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Use slice::split_first instead of manuall slicing

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This commit is contained in:
Lzu Tao 2021-01-20 01:33:38 +00:00
parent c5a96fb797
commit 6b66749e17
1 changed files with 2 additions and 2 deletions
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4
library/std/src/net/ip.rs
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@ -1610,9 +1610,9 @@ impl fmt::Display for Ipv6Addr {
/// Write a colon-separated part of the address /// Write a colon-separated part of the address
#[inline] #[inline]
fn fmt_subslice(f: &mut fmt::Formatter<'_>, chunk: &[u16]) -> fmt::Result { fn fmt_subslice(f: &mut fmt::Formatter<'_>, chunk: &[u16]) -> fmt::Result {
if let Some(first) = chunk.first() { if let Some((first, tail)) = chunk.split_first() {
fmt::LowerHex::fmt(first, f)?; fmt::LowerHex::fmt(first, f)?;
for segment in &chunk[1..] { for segment in tail {
f.write_char(':')?; f.write_char(':')?;
fmt::LowerHex::fmt(segment, f)?; fmt::LowerHex::fmt(segment, f)?;
} }