// Golang program to illustrate the // use of switch with multiple value cases package main import ( "fmt" ) func main() { // 整数输入以从用户(只有1-10)判断奇偶性 var number int fmt.Scanln(&number) // 预测输入数字是偶数还是奇数 // 每个switch case都有多个值 switch number { case ...
如果select的多个分支都满足条件,则会随机的选取其中一个满足条件的分支, 如语言规范中所说: If multiple cases can proceed, a uniform pseudo-random choice is made to decide which single communication will execute. `case`语句的表达式可以为一个变量或者两个变量赋值。 有default语句。 package main import ...
golang网络框架netpoll(Multi-Reactor模型)核心源码分析 现如今提起网络大家的第一反应就是epoll,而实际工程开发中绝大部分的情况都会优先考虑采用已有的一些开源网络框架来做功能的开发。网络框架不同的语言有不同的实现,例如java中大名鼎鼎的netty,再比如c++中的libevent、boost::asio、muduo等,golang中目前在开源社区...
.\First.go:8:2:invalidcase1inswitch(mismatchedtypesintandbool).\First.go:10:2:invalidcase2inswitch(mismatchedtypesintandbool).\First.go:12:2:invalidcase3inswitch(mismatchedtypesintandbool).\First.go:14:2:invalidcase4inswitch(mismatchedtypesintandbool) #Switch case contains multiple expressions ...
SwitchStmt = ExprSwitchStmt | TypeSwitchStmt . 有两种形式:表达式switch和类型switch。在表达式switch中,cases包含与switch表达式的值进行比较的表达式。在类型switch中,cases包含与特殊注释的switch表达式的类型进行比较的类型。switch表达式在switch语句中只计算一次 表达式switch 在表达式switch中,将对switch表达式求值,并...
func(s *session)handleLoop() {// 省略部分代码for{// A select blocks until one of its cases is ready to run.// It choose one at random if multiple are ready. Otherwise it choose default branch if none is ready.select{// 省略部分代码caseoutPkg, ok = <-s.wQ:// 省略部分代码iovec ...
For cases when you need to add multiple string translations depending on plural values, you need to add special calls to configure that in your translation catalogs. The sub-package golang.org/x/text/feature/plural exposes a function called SelectF that is used to define multiple linguistic plu...
Switch cases evaluate cases from top to bottom, stopping when a case succeeds. Switch statements work on values of any type, not just integers. There are two types of switch statements: switch expressions and switch types. We can use commas to separate multiple expressions in the same case st...
// A select blocks until one of its cases is ready to run. // It choose one at random if multiple are ready. Otherwise it choose default branch if none is ready. select { // 省略部分代码 case outPkg, ok = <-s.wQ: // 省略部分代码 ...
func (s *session) handleLoop() { // 省略部分代码 for { // A select blocks until one of its cases is ready to run. // It choose one at random if multiple are ready. Otherwise it choose default branch if none is ready. select { // 省略部分代码 case outPkg, ok = <-s.wQ: /...