const expect = @import("std").testing.expect; const builtin = @import("builtin"); const module = @This(); fn Point(comptime T: type) type { return struct { const Self = @This(); x: T, y: T, fn addOne(self: *Self) void { self.x += 1; self.y += 1; } }; } fn add(x: i32, y: i32) i32 { return x + y; } test "this refer to module call private fn" { try expect(module.add(1, 2) == 3); } test "this refer to container" { if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; var pt: Point(i32) = undefined; pt.x = 12; pt.y = 34; Point(i32).addOne(&pt); try expect(pt.x == 13); try expect(pt.y == 35); }