main.go 源码
// Copyright © 2018 Inanc Gumus
// Learn Go Programming Course
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
//
// For more tutorials : https://learngoprogramming.com
// In-person training : https://www.linkedin.com/in/inancgumus/
// Follow me on twitter: https://twitter.com/inancgumus
package main
import (
"fmt"
"time"
)
func main() {
// hours's type is time.Duration
// but later's type was int
// now, `later` is typeless
//
// time.Duration's underlying type is int64
// and, `later` is numeric typeless value
// so, they can be multiplied
const later = 10
hours, _ := time.ParseDuration("1h")
fmt.Printf("%s later...\n", hours*later)
}
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