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MFC子窗口和父窗口(SetParent,SetOwner) - C/C++ - 清泛网 - 专注C/C++及内核技术
...则该窗口就成为这个新的弹出式窗口的owner,否则,系统从hWndParent的父窗口向上找,直到找到第一个非子窗口,把它作为该弹出窗口的owner。当owner窗口销毁的时候,系统自动销毁这个弹出窗口。
Pop-up类型的窗口也属于顶级窗口...
Ora-00257 错误处理一列 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...
2014_11_05/
2014_11_06/
2014_11_07/
2014_11_10/
然后开始删除从最早的开始删除
检查一些无用的archivelog
RMAN> crosscheck archivelog all;
删除过期的归档
RMAN> delete expired archivelog all;
注:删除过期的归档
这样就把归档文件删除了...
Easiest way to flip a boolean value?
...han longVariableName = !longVariableName; And every programmer should know XOR.
– xamid
Oct 5 '17 at 16:15
3
...
APP INVENTOR硬件交互学习教程03——巧借arduino nano 配置HC-05 - 创客硬...
...和设置指令
这里重点是查看角色AT+ROLE,我们需要配置成从角色,手机是主角色
另外一个就是AT+PSWD?,这个手机配对是需要的
最后一个就是AT+UART?,波特率我们使用9600,当然你可以自行设置成其他。
4.通过上面设置后,我们...
What is the fastest way to compare two sets in Java?
...like that? Well if the set hashcode was:
zero for an empty set, and
the XOR of all of the element hashcodes for a non-empty set,
then you could cheaply update the set's cached hashcode each time you added or removed an element. In both cases, you simply XOR the element's hashcode with the curr...
Best practices for overriding isEqual: and hash
...
A simple XOR over the hash values of critical properties is sufficient
99% of the time.
For example:
- (NSUInteger)hash
{
return [self.name hash] ^ [self.data hash];
}
Solution found at http://nshipster.com/equality/ by Mat...
中文网(自研/维护)拓展 · App Inventor 2 中文网
...
Copy(text)
拷贝文本到剪贴板。
Paste()
从剪贴板粘贴内容并返回文本。
ECharts
Component for ECharts
属性
ShowAnimation
动画是否开启。
ShowValue
是否显示数字提示。
ThemeIndex
...
Random shuffling of an array
...
The xor trick is great for swapping CPU registers when the CPU has no swap instruction and there are no free registers, but for swapping array elements inside a loop, I don’t see any benefit. For the temporary local variables, ...
For i = 0, why is (i += i++) equal to 0?
...
Disassembly of the running code:
int i = 0;
xor edx, edx
mov dword ptr i, edx // set i = 0
i += i++;
mov eax, dword ptr i // set eax = i (=0)
mov dword ptr tempVar1, eax // set tempVar1 = eax (=0)
mov eax...
HAXM 安装/启动失败? - App Inventor 2 离线版 - 清泛IT社区,为创新赋能!
...t hypervisorlaunchtype off运行后 重启电脑
HAXM 设备文件丢失
从错误提示 Unable to open HAXM device: ERROR_FILE_NOT_FOUND 看,可能是 HAXM 设备文件缺失。尝试重新安装 HAXM,或在命令行执行:sc query intelhaxm
如果没有输出,则可能 HAXM 没有正...