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package main
import (
"fmt"
)
func main() {
array := [4]string{}
fruits := []string{
"apple",
"orange",
"grape",
"kiwi",
"pineapple",
}
for i, f := range fruits {
array[i] = f
}
fmt.Printf("%#v", array)
}
panic: runtime error: index out of range
goroutine 1 [running]: main.main()
/tmp/sandbox760713094/main.go:17 +0x160
Program exited: status 2.
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package main
import (
"fmt"
"runtime"
)
func main() {
array := [4]string{}
fruits := []string{
"apple",
"orange",
"grape",
"kiwi",
"pineapple",
}
for i, f := range fruits {
// Breakpoint
runtime.Breakpoint()
array[i] = f
}
fmt.Printf("%#v", array)
}
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$
package main
import (
"fmt"
"github.com/pkg/profile"
)
func fib(n int) int {
if n < 2 {
return n
}
return fib(n-1) + fib(n-2)
}
func main() {
defer profile.Start(profile.ProfilePath(".")).Stop()
fmt.Println("Start")
for i := 0; i < 1000; i++ {
fib(50)
}
fmt.Println("Finish")
}
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• B 1
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(e.g. go tool pprof --text pprof/test.bin pprof/cpu.out)
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