// A Source represents a source of uniformly-distributed // pseudo-random int64 values in the range [0, 1<<63). type Source interface { Int63() int64 Seed(seed int64) } 我们初始化 Rand 的时候,通过rand.New(rand.NewSource(seed))创建,看下rand.New()的实现。 代码语言:javascript 代码运行...
通过汇编码观察,在range语句中,是先调用runtime.mapiterinit 再循环调用 mapiternext() 来完成迭代.注意看JMP指令. mapiterinit是初始化方法,主要是初始化hiter结构体,hiter就是golang用来迭代map的结构体 type hiter struct { key unsafe.Pointer // 本次迭代的key,nil表示迭代结束 elem unsafe.Pointer // 迭代...
https://github.com/malfunkt/iprange | 解析IP地址列表 | 38 https://github.com/CTF-MissFeng/nmaps | 新一代端口及指纹扫描器 136 https://github.com/projectdiscovery/naabu | Go编写的端口扫描工具 | 848 https://github.com/4dogs-cn/TXPortMap | 端口扫描器和Banner识别 | 252 https://github...
The first upstream's weight range is 1-10, and the second upstream's weight range is 11-30. This logic extends to more upstreams. Each time, a random number within the total weight range is chosen, and the corresponding upstream is selected based on this number's range....
closedUDPPort=(get_random_uint()%14781)+30000; 指纹生成 这是造轮子过程中最麻烦的部分,需要将这些指纹结果一一实现。 TCP ISN 最大公约数 (GCD) tcp前六个探测包中,tcp seq数值的差值作为一个数组,这个数组及有5个元素。取这个数组的最大公约数。
func TestAdd(t *testing.T) { tests := []struct{ name string first int64 second int64 expected int64 } { { name: "HappyPath": first: 2, second: 3, expected: 5, }, { name: "NegativeNumber": first: -1, second: -1, expected: -2, }, } for _, test := range tests { t....
当主函数main首先创建了5个信号量,然后开启五个线程执行incCounter方法,incCounter内部执行, 使用cas操作递增counter的值,atomic.CompareAndSwapInt32具有三个参数,第一个是变量的地址,第二个是变量当前值,第三个是要修改变量为多少,该函数如果发现传递的old值等于当前变量的值,则使用第三个变量替换变量的值并返回tru...
type hiter struct { // 指向遍历的 key 的指针 key unsafe.Pointer // Must be in first position. Write nil to indicate iteration end (see cmd/compile/internal/walk/range.go). // 指向遍历的 value 的指针 elem unsafe.Pointer // Must be in second position (see cmd/compile/internal/walk/rang...
number of messages to keep in memory (per topic/channel) (default 10000) -msg-timeout string duration to wait before auto-requeing a message (default "1m0s") -node-id int unique part for message IDs, (int) in range [0,1024) (default is hash of hostname) (default 616) ...
// random number range rnr := 10 // returns, as an int, a non-negative pseudo-random number in [0,n) return rand.Intn(rnr) } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 注意这里的函数名ReadNumber,首字母必须大写!!!否则无法再外部调用此函数 ...