// 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 ...
switch val := v.(type) { then if the case has multiple types, the type of val is interface{}. And Go does not permit writing float64(val) if val has type interface{}. It's true that float64(val) can be compiled for every type in the case, but since Go is statically typed th...
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 ...
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,并从...
If there are many matched cases, the first matched cases are executed. #Golang Switch Case Example Here is a basic example of switch-case statements. In the below example, The number is declared with the value 1. In the switch, the number compares with the value of the number against al...
Do things with numbers, strings and switch-cases (Golang Playground) go run numbers.go Use a template to create and fill documents (this example usesLaTeX) (Golang Playground) go run template.go pdflatex -interaction=nonstopmode template_latex.tex ...
// as with for and if, you can have an assignment statement before the switch value switch os := runtime.GOOS; os { case "darwin": ... } // you can also make comparisons in switch cases number := 42 switch { case number
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...
switch operatingSystem { case "darwin": fmt.Println("Mac OS Hipster") // cases break automatically, no fallthrough by default case "linux": fmt.Println("Linux Geek") default: // Windows, BSD, ... fmt.Println("Other") } // as with for and if, you can have an assignment statement...
Go语言中可以通过runtime.GOMAXPROCS()函数设置当前程序并发时占用的CPU逻辑核心数。 Go1.5版本之前,默认使用的是单核心执行。Go1.5版本之后,默认使用全部的CPU逻辑核心数。 将核心数编辑为1: packagemainimport("fmt""runtime""time")funca(){fori :=0; i <10; i++ {fmt.Println("A", i)}}funcb(){...