虽然不能保证每个单独的 GUID 都是唯一的，但唯一密钥的总数如此之大（ 2128 或3.4028 ×1038 ），世界上独立生成两个匹配密钥的可能性极小。
如何更改（修改）它以使其永远无法匹配？
例如，有一个包含元素的数组。
int [] numbers = new int[] { 1, 2, 3, 4, 5 };
for (int i = 0; i < numbers.Length; ++i)
{
Console.WriteLine(numbers[i]);
}
- 当我打开 ILSpy 时，我发现 (++i)preincrement 变成了 postincrement(i++)，虽然看起来应该是相反的。
- number.Length 计算 1 次或每次迭代？？（理论上，每次，但你永远不知道环境如何以某种方式优化它）在循环之前将条件放入单独的变量中是否有意义？
进行一个读取bool变量的循环
#include <cstdio>
volatile bool stop = false;
void loop() {
while (!stop) {
putchar('.');
}
}
我们想更改stop第 4 次读取时的值，以便循环打印省略号并结束。
如何拦截 Windows 上停止变量的读数并更改其值？
有一篇学期论文。课程作业的主题是“自动化注册办公系统”。好吧，你可以说我完成了工作，但由于登记处的数据非常重要，所以我决定编写一个脚本来制作dump数据库。
什么时候做才合适dump？也许每小时一次，或者每个工作日之后，或者数据库中的每次更改之后？
使用更新进行全新安装。启用从所有来源下载驱动程序。扬声器或耳机没有声音。不在 ubuntu 和 elementary 操作系统中。一切都包含在操作系统中，没有错误。声音设置中存在某种虚拟输出。麦克风也未定义，在相机应用程序中无法切换到第二个前端。触摸屏也有问题（例如，我无法在浏览器中滚动页面，它只是突出显示。笔记本电脑型号HP x2-10-p0005;我可以解决这个问题吗？是否有我需要的驱动程序？
$ lspci -vnn
00:00.0 Host bridge [0600]: Intel
Corporation Device [8086:2280] (rev 36) Subsystem: Hewlett-Packard
Company Device [103c:827c] Flags: bus master, fast devsel, latency 0
Kernel driver in use: iosf_mbi_pci
00:02.0 VGA compatible controller [0300]: Intel Corporation Device
[8086:22b0] (rev 36) (prog-if 00 [VGA controller]) DeviceName:
Onboard IGD Subsystem: Hewlett-Packard Company Device [103c:827c]
Flags: bus master, fast devsel, latency 0, IRQ 311 Memory at
90000000 (64-bit, non-prefetchable) [size=16M] Memory at 80000000
(64-bit, prefetchable) [size=256M] I/O ports at f000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: <access denied> Kernel driver in use: i915 Kernel
modules: i915
00:03.0 Multimedia controller [0480]: Intel Corporation Device
[8086:22b8] (rev 36) Subsystem: Hewlett-Packard Company Device
[103c:827c] Flags: fast devsel, IRQ 255 Memory at 91000000 (32-bit,
non-prefetchable) [disabled] [size=4M] Capabilities: <access denied>
00:0a.0 Non-VGA unclassified device [0000]: Intel Corporation Device
[8086:22d8] (rev 36) Subsystem: Hewlett-Packard Company Device
[103c:827c] Flags: fast devsel, IRQ 255 Memory at 9193c000 (32-bit,
non-prefetchable) [disabled] [size=4K] Capabilities: <access denied>
00:0b.0 Signal processing controller [1180]: Intel Corporation Device
[8086:22dc] (rev 36) Subsystem: Hewlett-Packard Company Device
[103c:827c] Flags: fast devsel, IRQ 312 Memory at 9193b000 (64-bit,
non-prefetchable) [size=4K] Capabilities: <access denied> Kernel
driver in use: proc_thermal Kernel modules: processor_thermal_device
00:14.0 USB controller [0c03]: Intel Corporation Device [8086:22b5]
(rev 36) (prog-if 30 [XHCI]) Subsystem: Hewlett-Packard Company
Device [103c:827c] Flags: bus master, medium devsel, latency 0, IRQ
310 Memory at 91900000 (64-bit, non-prefetchable) [size=64K]
Capabilities: <access denied> Kernel driver in use: xhci_hcd
00:1a.0 Encryption controller [1080]: Intel Corporation Device
[8086:2298] (rev 36) Subsystem: Hewlett-Packard Company Device
[103c:827c] Flags: bus master, fast devsel, latency 0, IRQ 313
Memory at 91700000 (32-bit, non-prefetchable) [size=1M] Memory at
91600000 (32-bit, non-prefetchable) [size=1M] Capabilities: <access
denied> Kernel driver in use: mei_txe Kernel modules: mei_txe
00:1c.0 PCI bridge [0604]: Intel Corporation Device [8086:22c8] (rev
36) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel,
latency 0, IRQ 309 Bus: primary=00, secondary=01, subordinate=01,
sec-latency=0 Memory behind bridge: 91800000-918fffff Capabilities:
<access denied> Kernel driver in use: pcieport Kernel modules:
shpchp
00:1f.0 ISA bridge [0601]: Intel Corporation Device [8086:229c] (rev
36) Subsystem: Hewlett-Packard Company Device [103c:827c] Flags: bus
master, medium devsel, latency 0 Capabilities: <access denied>
Kernel driver in use: lpc_ich Kernel modules: lpc_ich
01:00.0 Network controller [0280]: Intel Corporation Wireless 3165
[8086:3165] (rev 81) DeviceName: Intel Stone Peak I Subsystem: Intel
Corporation Wireless 3165 [8086:8010] Flags: bus master, fast devsel,
latency 0, IRQ 314 Memory at 91800000 (64-bit, non-prefetchable)
[size=8K] Capabilities: <access denied> Kernel driver in use:
iwlwifi Kernel modules: iwlwifi