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| author | Shotaro Yamada <[email protected]> | 2019-09-25 02:30:33 +0100 |
|---|---|---|
| committer | Shotaro Yamada <[email protected]> | 2019-09-25 02:30:33 +0100 |
| commit | 7e0fa715329571da8d5d551b1815303c39cf51c1 (patch) | |
| tree | e3aeb7e0da92f663aa7fb710dcfe6d2e69d8026c | |
| parent | c7420ddaaa76741d1eebe393406b38ba5596e54a (diff) | |
Avoid intermediate allocation
| -rw-r--r-- | crates/ra_hir/src/ty.rs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/crates/ra_hir/src/ty.rs b/crates/ra_hir/src/ty.rs index e6ecbe1ea..fae9c1e22 100644 --- a/crates/ra_hir/src/ty.rs +++ b/crates/ra_hir/src/ty.rs | |||
| @@ -223,7 +223,7 @@ impl Substs { | |||
| 223 | } | 223 | } |
| 224 | 224 | ||
| 225 | pub fn prefix(&self, n: usize) -> Substs { | 225 | pub fn prefix(&self, n: usize) -> Substs { |
| 226 | Substs(self.0.iter().cloned().take(n).collect::<Vec<_>>().into()) | 226 | Substs(self.0[..std::cmp::min(self.0.len(), n)].into()) |
| 227 | } | 227 | } |
| 228 | 228 | ||
| 229 | pub fn walk(&self, f: &mut impl FnMut(&Ty)) { | 229 | pub fn walk(&self, f: &mut impl FnMut(&Ty)) { |