Truncate

返回把 DURATION1 向零方向截断到 DURATION2 整数倍后的结果。

签名: DURATION1.Truncate DURATION2
返回类型: time.Duration

{{ $d = time.ParseDuration "3.5h2.5m1.5s" }}

{{ $d.Truncate (time.ParseDuration "2h") }} → 2h0m0s
{{ $d.Truncate (time.ParseDuration "3m") }} → 3h30m0s
{{ $d.Truncate (time.ParseDuration "4s") }} → 3h32m28s