expectedErr  error
		expectedTime time.Time
		timeStr      string
	}
	testCases := []testCase{
		{
			ErrMalformedDate,
			time.Time{},
			"Tue Sep  6 07:10:23 PM PDT 2022",
		},
		{
			nil,
			time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC),
			"Tue, 10 Nov 2009 23:00:00 UTC",
		},
	}

	for _, testCase := range testCases {
		t.Run(testCase.timeStr, func(t *testing.T) {

	// type of i is int
	// type of s is string
	// s == a[i]
	g(i, s)
}

var key string
var val interface{}  // element type of m is assignable to val
m := map[string]int{"mon":0, "tue":1, "wed":2, "thu":3, "fri":4, "sat":5, "sun":6}
for key, val = range m {
	h(key, val)
}
// key == last map key encountered in iteration
// val == map[key]

var ch chan Work = producer()