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std.ArrayList: add clearRetainingCapacity and clearAndFree

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This commit is contained in:
Andrew Kelley
2021-05-05 16:55:49 -07:00
parent 5d7f2697de
commit c714a3250f
1 changed files with 24 additions and 0 deletions
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24
lib/std/array_list.zig
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@@ -294,6 +294,18 @@ pub fn ArrayListAligned(comptime T: type, comptime alignment: ?u29) type {
self.items.len = new_len;
}
/// Invalidates all element pointers.
pub fn clearRetainingCapacity(self: *Self) void {
self.items.len = 0;
}
/// Invalidates all element pointers.
pub fn clearAndFree(self: *Self) void {
self.allocator.free(self.allocatedSlice());
self.items.len = 0;
self.capacity = 0;
}
/// Deprecated: call `ensureUnusedCapacity` or `ensureTotalCapacity`.
pub const ensureCapacity = ensureTotalCapacity;
@@ -611,6 +623,18 @@ pub fn ArrayListAlignedUnmanaged(comptime T: type, comptime alignment: ?u29) typ
self.items.len = new_len;
}
/// Invalidates all element pointers.
pub fn clearRetainingCapacity(self: *Self) void {
self.items.len = 0;
}
/// Invalidates all element pointers.
pub fn clearAndFree(self: *Self, allocator: *Allocator) void {
allocator.free(self.allocatedSlice());
self.items.len = 0;
self.capacity = 0;
}
/// Deprecated: call `ensureUnusedCapacity` or `ensureTotalCapacity`.
pub const ensureCapacity = ensureTotalCapacity;