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Allow const for ArrayList.getLast, fix #14522

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This commit is contained in:
Nicolas Goy 2023-02-04 03:01:47 +01:00 committed by Andrew Kelley
parent 7f24993772
commit b7c96c3bbd
1 changed files with 28 additions and 4 deletions
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32
lib/std/array_list.zig
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@ -482,14 +482,14 @@ pub fn ArrayListAligned(comptime T: type, comptime alignment: ?u29) type {
/// Return the last element from the list.
/// Asserts the list has at least one item.
pub fn getLast(self: *Self) T {
pub fn getLast(self: Self) T {
const val = self.items[self.items.len - 1];
return val;
}
/// Return the last element from the list, or
/// return `null` if list is empty.
pub fn getLastOrNull(self: *Self) ?T {
pub fn getLastOrNull(self: Self) ?T {
if (self.items.len == 0) return null;
return self.getLast();
}
@ -961,14 +961,14 @@ pub fn ArrayListAlignedUnmanaged(comptime T: type, comptime alignment: ?u29) typ
/// Return the last element from the list.
/// Asserts the list has at least one item.
pub fn getLast(self: *Self) T {
pub fn getLast(self: Self) T {
const val = self.items[self.items.len - 1];
return val;
}
/// Return the last element from the list, or
/// return `null` if list is empty.
pub fn getLastOrNull(self: *Self) ?T {
pub fn getLastOrNull(self: Self) ?T {
if (self.items.len == 0) return null;
return self.getLast();
}
@ -1719,3 +1719,27 @@ test "std.ArrayList(?u32).popOrNull()" {
try testing.expect(list.popOrNull().? == null);
try testing.expect(list.popOrNull() == null);
}
test "std.ArrayList(u32).getLast()" {
const a = testing.allocator;
var list = ArrayList(u32).init(a);
defer list.deinit();
try list.append(2);
const const_list = list;
try testing.expectEqual(const_list.getLast(), 2);
}
test "std.ArrayList(u32).getLastOrNull()" {
const a = testing.allocator;
var list = ArrayList(u32).init(a);
defer list.deinit();
try testing.expectEqual(list.getLastOrNull(), null);
try list.append(2);
const const_list = list;
try testing.expectEqual(const_list.getLastOrNull().?, 2);
}