Quick Start
ubuntu
Install golang:
sudo apt-get install golang
mkdir -p $HOME/go_work/src/github.com/username/hello
export GOPATH=$HOME/work
For convenience, add the workspace’s bin subdirectory to your .bashrc:
export GOPATH=$HOME/go_work
export PATH=$PATH:$GOPATH/bin
Save following to $GOPATH/src/github.com/username/hello/hello.go:
package main
import "fmt"
func main() {
fmt.Printf("hello, world\n")
}
compile and run:
go install github.com/username/hello
$GOPATH/bin/hello
Done!
My first golang programe
package main
import "fmt"
// fibonacci
// fibonacci 函数会返回一个返回 int 的函数。
func fibonacci() func() int {
count := 0
a := 1
b := 1
return func() int {
count++
if count <= 2 {
a = 1
b = 1
return 1
}
c := b
b = a + b
a = c
return b
}
}
func main() {
f := fibonacci()
for i := 0; i < 10; i++ {
fmt.Println(f())
}
}