代码语言:go AI代码解释 packagemainimport("fmt"mapset"github.com/deckarep/golang-set/v2")funcmain(){// Create a string-based set of required classes.required:=mapset.NewSet[string]()required.Add("cooking")required.Add("english")required.Add("math")required.Add("biology")// Create a str...
通过array的切片可以切出slice,也可以使用make创建slice,此时golang会生成一个匿名的数组。 因为slice依赖其底层的array,修改slice本质是修改array,而array又是有大小限制,当超过slice的容量,即数组越界的时候,需要通过动态规划的方式创建一个新的数组块。把原有的数据复制到新数组,这个新的array则为slice新的底层依赖。
field] # Map column `id` to ES field `es_id` id="es_id" # Map column `tags` to ES field `es_tags` with array type tags="es_tags,list" # Map column `keywords` to ES with array type keywords=",list" # Filter rule # # desc tfilter; # +---+---+---+---+---+---...
offi := (i + it.offset) & (bucketCnt - 1) if isEmpty(b.tophash[offi]) || b.tophash[offi] == evacuatedEmpty { continue } // 位偏移算出key k := add(unsafe.Pointer(b), dataOffset+uintptr(offi)*uintptr(t.keysize)) if t.indirectkey() { k = *((*unsafe.Pointer)(k)) }...
newbuckets := newarray(t.bucket, 1<<(h.B+bigger)) flags := h.flags &^ (iterator | oldIterator) if h.flags&iterator != 0 { flags |= oldIterator } // 更新hmap的变量 h.B += bigger h.flags = flags h.oldbuckets = oldbuckets ...
{ // Array allocation. If there are any // pointers, GC has to scan to the last // element. if typ.ptrdata != 0 { scanSize = dataSize - typ.size + typ.ptrdata } } else { scanSize = typ.ptrdata } c.local_scan += scanSize } // 内存屏障, 因为x86和x64的store不会乱序所以...
go run in_array.go Calculate triangles (Golang Playground) Read from stdin (but don't wait for the enter key) go run getchar.go Wait and sleep (Golang Playground) go run wait.go Last in - first out - example (Pop and push in Golang) (Golang Playground) ...
#upstream proxy server IP address: proxy_server_ip = 1.1.1.1 #Router running proxy listening port: proxy_local_port = 33080 #There is no need to modify the following #create a new chain named PROXY iptables -t nat -N PROXY #Ignore your PROXY server's addresses #It's very IMPORTANT, ...
二是 select 返回后会把以前加入的但并无事件发生的 fd 清空,则每次开始 select 前都要重新从 array 取得 fd 逐一加入(FD_ZERO 最先),扫描 array 的同时取得 fd 最大值 maxfd,用于 select 的第一个参数 可见select 模型必须在 select 前循环 array(加 fd,取 maxfd),select 返回后循环 array(FD_ISSET ...
4.3 makeBucketArray makeBucketArray 方法会进行桶数组的初始化,并根据桶的数量决定是否需要提前作溢出桶的初始化. 方法主干代码如下: func makeBucketArray(t *maptype, b uint8, dirtyalloc unsafe.Pointer) (buckets unsafe.Pointer, nextOverflow *bmap) { base := bucketShift(b) nbuckets := base if b...