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package main
import (
    "fmt"
    "time"
)
const (
    FIRST  = "WHAT THE"
    SECOND = "F*CK"
)
func main() {
    var s string
    go func() {
        i := 1
        for {
            i = 1 - i
            if i == 0 {
                s = FIRST
            } else {
                s = SECOND
            }
            time.Sleep(10)
        }
    }()
    for {
        if s == "WHAT" {
            panic(s)
        }
        fmt.Println(s)
        time.Sleep(10)
    }
}

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WHAT THE
WHAT THE
panic: WHAT

goroutine 1 [running]:
main.main()
	/Users/zerun.dong/code/gotest/string.go:26 +0x11a
exit status 2

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type StringHeader struct {
	Data uintptr
	Len  int
}

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package main
import (
   "fmt"
   "github.com/myteksi/hystrix-go/hystrix"
   "time"
)
var FIRST error = hystrix.CircuitError{Message:"timeout"}
var SECOND error = nil
func main() {
   var err error
   go func() {
      i := 1
      for {
         i = 1 - i
         if i == 0 {
            err = FIRST
         } else {
            err = SECOND
         }
         time.Sleep(10)
      }
   }()
   for {
      if err != nil {
         fmt.Println(err.Error())
      }
      time.Sleep(10)
   }
}

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ITCN000312-MAC:gotest zerun.dong$ go run panic.go
hystrix: timeout
panic: value method github.com/myteksi/hystrix-go/hystrix.CircuitError.Error called using nil *CircuitError pointer

goroutine 1 [running]:
github.com/myteksi/hystrix-go/hystrix.(*CircuitError).Error(0x0, 0xc0000f4008, 0xc000088f40)
	<autogenerated>:1 +0x86
main.main()
	/Users/zerun.dong/code/gotest/panic.go:25 +0x82
exit status 2

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type eface struct {
    _type *_type
    data  unsafe.Pointer
}

type iface struct {
    tab  *itab
    data unsafe.Pointer
}

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fn main() {
    let a = String::from("abc");
    let b = a;

    println!("{}", b);
    println!("{}", a);
}

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ITCN000312-MAC:hello zerun.dong$ cargo run
   Compiling hello v0.1.0 (/Users/zerun.dong/projects/hello)
error[E0382]: borrow of moved value: `a`
 --> src/main.rs:6:20
  |
2 |     let a = String::from("abc");
  |         - move occurs because `a` has type `String`, which does not implement the `Copy` trait
3 |     let b = a;
  |             - value moved here
...
6 |     println!("{}", a);
  |                    ^ value borrowed here after move

error: aborting due to previous error