err error)fmt.Println(math.MaxUint32)math.MaxUint32是int在此上下文中默认为类型的无类型整数常量，...
MaxInt16) fmt.Println("int32:", math.MinInt32, "~", math.MaxInt32) fmt.Println("int64:", math.MinInt64, "~", math.MaxInt64) fmt.Println() // n是自动推导类型 n := 1234567890 fmt.Printf("n := 1234567890 的默认类型为: %T\n", n) fmt.Printf("int类型的字节数为: %v\n\n"...
=0&&p.blockingNum>=p.options.MaxBlockingTasks{p.lock.Unlock()return}p.blockingNum++p.cond.Wait()// block and wait for an available workerp.blockingNum--varnw intifnw=p.Running();nw==0{// awakened by the scavengerp.lock.Unlock()if!p.IsClosed(){spawnWorker()}return}ifw=p.workers....
func doBusiness(ch chan bool, i int) { fmt.Println("i的值:", i, "协程数:", runtime.NumGoroutine()) <-ch } func main() { max := math.MaxInt64 fmt.Println(max) ch := make(chan bool, 3) for i := 0; i < max; i++ { ch <- true go doBusiness(ch, i) } } 1. 2...
"math" "runtime" ) // 测试是否可以无限go func main(){ // 模式业务需要开辟的数量 task_cnt := math.MaxInt64 for i := 0 ; i< task_cnt;i++ { go func (num int){ // 完成一些业务 fmt.Println("go func ",i," goroutine count=",runtime.NumGoroutine()) ...
fmt.Printf("float32的最小值是:%.f\n", math.SmallestNonzeroFloat32) fmt.Printf("Int8的最大值是:%d\n", math.MaxInt8) fmt.Printf("Int8的最小值是:%d\n", math.MinInt8) fmt.Printf("Uint8的最大值是:%d\n", math.MaxUint8) ...
ants.go给初始化默认协程池对象defaultAntsPool(默认的pool容量是math.MaxInt32)提供了公共函数 介绍完了主要的库文件后,我们进行逐个的了解,具体的使用,我们可以结合官方的使用案例进行了解,这里就不进行展开了。 2.ants中Pool创建对象 创建Pool对象需调用ants.NewPool(size, options)函数,返回一个pool的指针 ...
The math package is lacking MaxInt, MaxUint, MinInt and MinUint. This makes writing programs that assign a max-value to int or uint without manually specifying the value impossible, if you want to run the program on both 32 and 64 bit pl...
// 定义int类型 var num int = 10 var number int // 默认值为0 // 转换为 int32 var b = int32(num) 浮点型# Go语音支持两种浮点型,数据格式遵循IEEE 754标准 float32:最大的范围约为-3.4e38~3.4e38,可以使用math.MaxFloat32定义 float64:最大的范围约为-1.8e308~1.8e308,可以使用math.MaxFloat...
"math" "sync" "runtime" ) var wg = sync.WaitGroup{} func doBusiness(i int) { fmt.Println("go func ", i, " goroutine count = ", runtime.NumGoroutine()) wg.Done() } func main() { //模拟用户需求业务的数量 task_cnt := math.MaxInt64 ...