多个相同结构体能实例能不能实现只反射一次获取到一个 unbond method 后续调用 - V2EX
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lolizeppelin

多个相同结构体能实例能不能实现只反射一次获取到一个 unbond method 后续调用

  •   
  •   lolizeppelin May 13, 2023 1938 views
    This topic created in 1096 days ago, the information mentioned may be changed or developed.
    想对多个结构体都调用相同的方法
    但是对所有相同结构体都要做反射性能也有影响
    但似乎没法获取到 unbond method

    或者说我直接说需求

    用 ent orm
    现在想把两个相同的库合并到第三个库
    我想到的做法是反射 Creae 结构体获取到 Set 字段设置所有属性然后 bulk insert

    有没有更好的办法
  • unbond
  • 反射
  • method
  • 相同
    6 replies    2023-05-17 23:35:26 +08:00
    Nazz
        1
    Nazz  
       May 13, 2023 via Android
    相同的方法可以用接口
    lolizeppelin
        2
    lolizeppelin  
    OP
       May 13, 2023
    @Nazz

    ent 代码是动态生成的
    leonshaw
        3
    leonshaw  
       May 13, 2023
    是这样？
    reflect.TypeOf(foo).Method(0).Func.Call([]reflect.Value{reflect.ValueOf(bar)})
    lolizeppelin
        4
    lolizeppelin  
    OP
       May 14, 2023
    @leonshaw
    对对对, 我傻掉了老是盯着 reflect.ValueOf
    mmnsghgn
        5
    mmnsghgn  
       May 15, 2023
    或许可以尝试一下使用自定义模板生成你需要的代码：

    https://entgo.io/zh/docs/templates
    lolizeppelin
        6
    lolizeppelin  
    OP
       May 17, 2023
    @zhengjian
    我也是这样想的 但是模板看半天一头雾水...没用过 golang 的模板
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