Hi, thanks for your answer, and i really cannot understander your code. can
you write a more clear version in go play ground?
i already create a template. pls notice that we cannot change origin fib
function.
https://play.golang.org/p/hYerZ2fv0dT
在 2019年11月2日星期六 UTC+8下午2:20:02，林风写道：
>
> let's say i have a function or method to get fib
>
> func fib(n int){
> ...
> return fib(n-1) + fib(n-2)
> }
>
>
> now i want to add a counter to track how many times i have called to fib.
>
> in python or jave i can easy use `decorator patten` to do it.
>
> but in go, you can not change fib since it is a function. if you define
> fib as a method, you cannot do it either since go did not have `Inherited`
> . you cannot call father class.
>
> so golang did not support such thing? can we just reflect to do so?
>
>
>
>
>
>
>
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