mirror/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2026-02-21 08:45:52 +00:00
Code Issues Packages Projects Releases Wiki Activity

std.HashMap: allow ensureCapacity with a zero parameter

Browse Source
This commit is contained in:
Andrew Kelley 2020-06-02 14:40:27 -04:00
parent 40a1cfed53
commit bae0c9b554
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
lib/std/hash_map.zig
View File

@ -169,6 +169,7 @@ pub fn HashMap(comptime K: type, comptime V: type, comptime hash: fn (key: K) u3
/// Increases capacity so that the hash map will be at most
/// 60% full when expected_count items are put into it
pub fn ensureCapacity(self: *Self, expected_count: usize) !void {
if (expected_count == 0) return;
const optimized_capacity = optimizedCapacity(expected_count);
return self.ensureCapacityExact(optimized_capacity);
}
@ -473,6 +474,9 @@ test "iterator hash map" {
var reset_map = AutoHashMap(i32, i32).init(std.testing.allocator);
defer reset_map.deinit();
// test ensureCapacity with a 0 parameter
try reset_map.ensureCapacity(0);
try reset_map.putNoClobber(0, 11);
try reset_map.putNoClobber(1, 22);
try reset_map.putNoClobber(2, 33);