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  • golang自定义某种类型时的打印输出

    给某个类型,定义String() 方法,可以用来自定义输出这个类型被打印时的输出的内容

    --------------------------

    package main
    
    import (
        "log"
    )
    type ss map[string]string
    
    func (a ss)String() string{
        return "zzzzzzz"
    }
    func main() {
        var a ss
        a = map[string]string{"__name__":"node_scrape_collector_success", "collector":"zfs"}
        log.Println(len(a))
        log.Printf("%v", a)
        log.Printf("%#v", a)
    }
    

      

    上面执行,

    root@go:/home/fly/test# go run ll.go
    2021/08/13 06:59:28 2
    2021/08/13 06:59:28 zzzzzzz
    2021/08/13 06:59:28 main.ss{"__name__":"node_scrape_collector_success", "collector":"zfs"}

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  • 原文地址:https://www.cnblogs.com/oxspirt/p/15137440.html
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