Commit 1de96a2cc4
Changed files (1)
lib
lib/std/array_list.zig
@@ -468,6 +468,20 @@ pub fn ArrayListAligned(comptime T: type, comptime alignment: ?u29) type {
pub fn unusedCapacitySlice(self: Self) Slice {
return self.allocatedSlice()[self.items.len..];
}
+
+ /// Return the last element from the list.
+ /// Asserts the list has at least one item.
+ 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 {
+ if (self.items.len == 0) return null;
+ return self.getLast();
+ }
};
}
@@ -913,6 +927,20 @@ pub fn ArrayListAlignedUnmanaged(comptime T: type, comptime alignment: ?u29) typ
pub fn unusedCapacitySlice(self: Self) Slice {
return self.allocatedSlice()[self.items.len..];
}
+
+ /// Return the last element from the list.
+ /// Asserts the list has at least one item.
+ 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 {
+ if (self.items.len == 0) return null;
+ return self.getLast();
+ }
};
}