分享
golang随笔
开开904 · · 2475 次点击 · · 开始浏览这是一个创建于 的文章,其中的信息可能已经有所发展或是发生改变。
break外层循环
func main() {
FirstLoop:
for i := 0; i < 10; i++ {
for j := 0; j < 10; j++ {
fmt.Printf("i=%d, j=%d\r\n", i, j)
if j == 5 {
break FirstLoop
}
}
}
fmt.Println("the end")
}
range读取slice
func main() {
array := [3]int32{1, 2}
aslice = array[0:2]
for i, v := range aslice {
fmt.Printf("[%d]=%d ", i, v)
}
}
range读取map
for key, value := range map{
fmt.Println("map's key:", key, " val:", value)
}
append slice
func test_slice_append1() {
array := [2]int32{1, 2} //array={1,2}
aslice := array[0:2] //aslice={1,2}
aslice = append(aslice, 3)
fmt.Println(array) //array={1,2}
fmt.Println(aslice) //aslice={1,2,3}
aslice[0] = 4
fmt.Println(array) //array={1,2}
fmt.Println(aslice) //aslice={4,2,3}
}
func test_slice_append2() {
array := [3]int32{1, 2} //array={1,2,0}
aslice := array[0:2] //aslice={1,2}
aslice = append(aslice, 3)
fmt.Println(array) //array={1,2,3}
fmt.Println(aslice) //aslice={1,2,3}
aslice[0] = 4
fmt.Println(array) //array={4,2,3}
fmt.Println(aslice) //aslice={4,2,3}
}
switch case跟C由一点区别,没有break
i := 10
switch i {
case 1:
fmt.Println("i is equal to 1")
case 2, 3, 4:
fmt.Println("i is equal to 2, 3 or 4")
case 10:
fmt.Println("i is equal to 10")
default:
fmt.Println("All I know is that i is an integer")
}
defer很好用,在退出函数时延迟执行,先进后出即按栈方式进行
有疑问加站长微信联系(非本文作者)
入群交流(和以上内容无关):加入Go大咖交流群,或添加微信:liuxiaoyan-s 备注:入群;或加QQ群:692541889
关注微信2475 次点击
上一篇:从python 迁移到GO
添加一条新回复
(您需要 后才能回复 没有账号 ?)
- 请尽量让自己的回复能够对别人有帮助
- 支持 Markdown 格式, **粗体**、~~删除线~~、
`单行代码` - 支持 @ 本站用户;支持表情(输入 : 提示),见 Emoji cheat sheet
- 图片支持拖拽、截图粘贴等方式上传
收入到我管理的专栏 新建专栏
break外层循环
func main() {
FirstLoop:
for i := 0; i < 10; i++ {
for j := 0; j < 10; j++ {
fmt.Printf("i=%d, j=%d\r\n", i, j)
if j == 5 {
break FirstLoop
}
}
}
fmt.Println("the end")
}
range读取slice
func main() {
array := [3]int32{1, 2}
aslice = array[0:2]
for i, v := range aslice {
fmt.Printf("[%d]=%d ", i, v)
}
}
range读取map
for key, value := range map{
fmt.Println("map's key:", key, " val:", value)
}
append slice
func test_slice_append1() {
array := [2]int32{1, 2} //array={1,2}
aslice := array[0:2] //aslice={1,2}
aslice = append(aslice, 3)
fmt.Println(array) //array={1,2}
fmt.Println(aslice) //aslice={1,2,3}
aslice[0] = 4
fmt.Println(array) //array={1,2}
fmt.Println(aslice) //aslice={4,2,3}
}
func test_slice_append2() {
array := [3]int32{1, 2} //array={1,2,0}
aslice := array[0:2] //aslice={1,2}
aslice = append(aslice, 3)
fmt.Println(array) //array={1,2,3}
fmt.Println(aslice) //aslice={1,2,3}
aslice[0] = 4
fmt.Println(array) //array={4,2,3}
fmt.Println(aslice) //aslice={4,2,3}
}
switch case跟C由一点区别,没有break
i := 10
switch i {
case 1:
fmt.Println("i is equal to 1")
case 2, 3, 4:
fmt.Println("i is equal to 2, 3 or 4")
case 10:
fmt.Println("i is equal to 10")
default:
fmt.Println("All I know is that i is an integer")
}
defer很好用,在退出函数时延迟执行,先进后出即按栈方式进行