变量值更改时中断

(1) Is there a way to stop the execution of a program when a variable changes its value?

Of course, I know we can set a breakpoint at some lines, but I would want just to set a variable, and when it changes, stop the program for debugging.

(2) I also want to see execution flow of a program (by logging to a file / printing on screen). Is there any way I can run my program and see the same (without stepping through each line)?

Please consider below example (https://play.golang.org/p/vOvW4GAM0j)

package main

import (
    "fmt"
    "math/rand"
    "time"
)

func main() {

    rand.Seed(time.Now().Unix())
    r := rand.Intn(100)
    var i int

    if r%2 == 0 {
        i = 2
    } else {
        i = 1
    }

    fmt.Println(i)
}

Now I want to break when value of i changes to non-zero value. It may be from line 16 or line 18.

(1) Is there any way I can set (conditional) breakpoint so that it breaks when value of i changes OR I have to put breakpoint on both lines (16 and 18)?

(2) Also, I want to know how program was executed... like line13 then line15 then line17, line18... (assuming odd random number)

Thanks!

You should try the Gogland IDE.

It has a fully functional GO Debugger you can set watches.

It's currently in beta stage, therefore you can use it for free.