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A Tour of Go If with a short statement

时间:2014-10-27 00:12:31      阅读:215      评论:0      收藏:0      [点我收藏+]

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Like for, the if statement can start with a short statement to execute before the condition.

Variables declared by the statement are only in scope until the end of the if.

(Try using v in the last return statement.)

package main  

import (
    "fmt"
    "math"
)

func pow(x, n , lim float64) float64 {
    if v := math.Pow(x,n); v < lim {
        return v
    }
    return lim
}

func main() {
    fmt.Println(
            pow(3, 2, 10),
            pow(3, 3, 20),
        )
}

 

A Tour of Go If with a short statement

标签:style   blog   color   io   ar   for   sp   div   on   

原文地址:http://www.cnblogs.com/ghgyj/p/4053006.html

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