Go 常见的引发 panic 的情况

package main
import "fmt"
func main() {
    var s []string
    fmt.Println(s)
    fmt.Println(s[0])
}

[]
panic: runtime error: index out of range

goroutine 1 [running]:
main.main()

package main
import "fmt"
type Person struct {
    Name string
    Age  int
}
func main() {
    var p *Person
    fmt.Println(p)
    fmt.Println(p.Name)
}

<nil>
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x10914c8]

goroutine 1 [running]:
main.main()

package main
import "fmt"
func main() {
    add(20, 18)
    add(1, "hello")
}
func add(a, b interface{}) {
    i := a.(int)
    j := b.(int)
    fmt.Println(i+j)
}

panic: interface conversion: interface {} is string, not int
38

goroutine 1 [running]:
main.add(0x10a0f60, 0x10d6840, 0x10a1660, 0x10d6b90)

package main
func main() {
    var ch chan int
    close(ch)
}

panic: close of nil channel

goroutine 1 [running]:
main.main()
package main
func main() {
    var ch chan int
    ch = make(chan int,0)
    close(ch)
    ch <- 108
}

panic: send on closed channel

goroutine 1 [running]:
main.main()

package main
func main() {
    var ch chan int
    ch = make(chan int)
    ch <- 108
}

fatal error: all goroutines are asleep - deadlock!

goroutine 1 [chan send]:
main.main()