map1 := make(map[string]string) map1["a"] ="AAA"map1["b"] ="BBB"map1["c"] ="CCC"fork, v :=range map1 { t.Log(k, v) }for_, v :=range map1 { t.Log(v) } array := [...]int64{1,2,3,4}fork, v :=range array { t.Log(k, v) }for_, v :=range array {...
1package main23import(4"fmt"5)67func main() {8arr :=make(map[int]string)9//arr := [3]int{1, 2, 3}10//打印初始的指针11fmt.Printf("the pointer is : %p \n", arr)12printPointer(arr)13}1415func printPointer(any interface{}) {16fmt.Printf("the pointer is : %p \n", any)17...
packagemainimport"fmt"funcmain(){varcountryCapitalMap map[string]string/* 创建集合 */countryCapitalMap=make(map[string]string)/* map 插入 key-value 对,各个国家对应的首都 */countryCapitalMap["France"]="Paris"countryCapitalMap["Italy"]="Rome"countryCapitalMap["Japan"]="Tokyo"countryCapitalMap["...
//实例演示vararr[10]int//定义一个长度为10的 int 类型的数组arr[0]=42//array 数组下标是从0开始的,给数组第一个元素赋值42arr[1]=13//给数组第二个元素赋值13//打印数组第一个元素fmt.Printf("数组 arr 第一个元素是 %d\n",arr[0])//打印数组最后一个元素,arr[9]因为没有初始化,输出 int 类...
//没有存储数据空间则申请, makemap_small 创建出来的hmap中 buckets 为nil if h.buckets == nil { h.buckets = newobject(t.bucket) // newarray(t.bucket, 1) } again: bucket := hash & bucketMask(h.B) if h.growing() { growWork_faststr(t, h, bucket) ...
makeBucketArray定义如下,该函数接受三个参数: t: 待分配桶所属的 map 指针 b: 桶数量的对数,值和B相等 dirtyalloc: 指向一个已经分配的桶数组的指针 返回两个指针: buckets: 指向普通的桶数组的指针 nextOverflow: 指向下一个可用的溢出桶数组的指针 func makeBucketArray(t *maptype, b uint8, dirtyal...
数组型(array) 切片型(slice) 地图型(map) 通道型(channel) 什么是Goroutine? Goroutine是Golang中轻量级线程的实现方式。与传统的线程相比,Goroutine更轻量级、更高效。 如何创建Goroutine? 可以通过关键字go来创建一个Goroutine。例如: go func() { // 执行代码 }() 什么是通道(Channel)? 通道是Golang中用...
go run array.go Declare your own functions (Golang Playground) go run function.go Do something multiple times (Golang Playground) go run for.go Read via cli provided input data (Golang Playground) go run args.go string string2 Read via cli provided input data (Golang Playground) ...
h.buckets = newobject(t.bucket)// newarray(t.bucket, 1) } again: // 省略 ... bucketloop: // 省略 ... done: ifh.flags&hashWriting ==0{ fatal("concurrent map writes") } h.flags &^= hashWriting ift.indirectelem { elem = *((*unsafe.Pointer)(elem)) ...
support directly inject function to run, and rename function support switch to help user to decide when a rule execute error in the list whether continue to execute the last rules support use '@name' to get rule's name in rule content support map, slice, array support rule pool, code loc...