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std.mem.order: use for loop syntax

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Not only does it look nicer, it's a performance enhancement for debug
builds since the safety checks are eliminated.
This commit is contained in:
Andrew Kelley 2023-06-19 12:05:40 -07:00
parent 32cb9462ff
commit e6e8cacab9
1 changed files with 2 additions and 3 deletions
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5
lib/std/mem.zig
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@ -597,9 +597,8 @@ pub fn sortUnstableContext(a: usize, b: usize, context: anytype) void {
/// Compares two slices of numbers lexicographically. O(n).
pub fn order(comptime T: type, lhs: []const T, rhs: []const T) math.Order {
const n = @min(lhs.len, rhs.len);
var i: usize = 0;
while (i < n) : (i += 1) {
switch (math.order(lhs[i], rhs[i])) {
for (lhs[0..n], rhs[0..n]) |lhs_elem, rhs_elem| {
switch (math.order(lhs_elem, rhs_elem)) {
.eq => continue,
.lt => return .lt,
.gt => return .gt,