大约有 30,000 项符合查询结果（耗时：0.0568秒） [XML]
error C2280: \'std::mutex::mutex(const std::mutex &)\' : attempting to...
...或者标记为delete.
例如:
class Account {
public:
Account(int id_, double ba = 0.0) :id(id_), balance(ba){}
void withdraw(double amount){
balance -= amount;
}
void deposit(double amount){
balance += amount;
}
void printInfo() const {
std::cout << "Account id: " << ...
通过API获取IP信息、IP归属地 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...Info.php?ip=8.8.8.8
{"code":0,"data":{"country":"\u7f8e\u56fd","country_id":"US","area":"","area_id":"","region":"","region_id":"","city":"","city_id":"","county":"","county_id":"","isp":"","isp_id":"","ip":"8.8.8.8"}}
注意：返回的json中有嵌套，解析时先解析出data，然后解析...
iOS开发(一)：真机调试 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...然后双击就会加入系统
注册你的设备
如果不知道UUID, 打开iTunes, 双击Serial Number
创建App ID
看说明创建你需要的APP ID, 主要是Bundle ID, 一般我们类似这样确保唯一 com.jackwang.nbapp
创建Provisioning Profile
选择iOS development, 点...
领域驱动设计系列（三）:事件驱动上 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... _equipmentRepository = equipmentRepository;
}
public void SetEquipmentBroken(string Id)
{
var equipment = _equipmentRepository.GetById(Id);
equipment.DeActive();
_emailService.SendEmail();
}
}
但是，问题来了，如果后来我们...
【phpcms v9】html静态化设置及URL规则优化 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...页面的默认生成规则是：
{$year}/{$catdir}_{$month}{$day}/{$id}.html|{$year}/{$catdir}_{$month}{$day}/{$id}_{$page}.html
或者：
{$categorydir}{$catdir}/{$year}/{$month}{$day}/{$id}.html|{$categorydir}{$catdir}/{$year}/{$month}{$day}/{$id}_{$page}.html
这样的规则生成...
c++关闭按钮灰掉 - C++ UI - 清泛IT社区，为创新赋能！
...得系统菜单
CMenu *pMenu = GetSystemMenu(false);
//获得关闭按钮ID
UINT ID = pMenu->GetMenuItemID(pMenu->GetMenuItemCount()-1);
//使关闭按钮无效
pMenu->EnableMenuItem(ID,MF_GRAYED);复制代码启用：
//获得系统菜单
CMenu *pMenu = GetSystemMenu(false);
//获得关闭...
使用照相机时老是弹出 error 201 : the camera d id not return an image ...
问题来自B站：https://message.bilibili.com/?spm_id_from=333.1007.0.0#/reply
解决方法：
1、很可能删除了 “Pictures“ 图片文件夹：/storage/emulated/0/Pictures，这个文件夹不能被相机组件自动创建。
2、官方确认这是一个bug，已修复。确认一下...
How can I do width = 100% - 100px in CSS?
...
Modern browsers now support the:
width: calc(100% - 100px);
To see the list of supported browser versions checkout: Can I use calc() as CSS unit value?
There is a jQuery fallback: css width: calc(100% -100px); alternative using jquery
...
in a “using” block is a SqlConnection closed on return or exception?
... come back and look at your code later and who really cares? Am I right? I mean 1 line instead of 23 means I'm a better programmer, right?
using (SqlConnection conn = new SqlConnection(connString)) using (SqlCommand comm = new SqlCommand(selectStatement, conn)) { try { conn.Open(); using (SqlDataRe...
What's the difference between => , ()=>, and Unit=>
...though nowadays it is mostly call-by-value and call-by-reference.
What it means is that what is passed is substituted for the value name inside the function. For example, take this function:
def f(x: => Int) = x * x
If I call it like this
var y = 0
f { y += 1; y }
Then the code will execut...