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VC MFC工具栏(CToolBar)控件 - C/C++ - 清泛网 - 专注C/C++及内核技术
...
m_Toolbar.LoadToolBar(IDR_TOOLBAR1);//装载工具栏资源
CRect rect(100,100,200,200);//
m_Toolbar.MoveWindow(rect);//移动工具栏在父窗口的位置
m_Toolbar.ShowWindow(SW_SHOW);//显示工具栏
但这样显示工具栏不是很方便，特别是当窗口大小改变后，还要计...
Select random lines from a file
...
Sort the file randomly and pick first 100 lines:
$ sort -R input | head -n 100 >output
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AngularJS : How to watch service variables?
...on(){
self.count++;
$timeout(self.counter, 1000);
}
self.addOneHundred = function(){
self.count+=100;
}
self.counter();
}
return new DemoService();
})
.controller("DemoControll...
omp parallel vs. omp parallel for
...lloc(...); // this data is thread private
#pragma omp for
for(1...100) // first parallelized cycle
{
}
#pragma omp single
{} // make some single thread processing
#pragma omp for // second parallelized cycle
for(1...100)
{
}
#pragma omp single
{}...
Select by partial string from a pandas DataFrame
...ise, regex search is slower than substring search:
df2 = pd.concat([df1] * 1000, ignore_index=True)
%timeit df2[df2['col'].str.contains('foo')]
%timeit df2[df2['col'].str.contains('foo', regex=False)]
6.31 ms ± 126 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
2.8 ms ± 241 µs per l...
Is a view faster than a simple query?
...ten need to report sales for tax purposes and we find that we've only sold 100 copies of our software in our home country. By creating an indexed view of just the Lithuanian records, we get to keep the records we need in an indexed cache as described in the MS documentation. When we run our reports...
Specifying and saving a figure with exact size in pixels
...ixels, you could do the following:
plt.figure(figsize=(3.841, 7.195), dpi=100)
( your code ...)
plt.savefig('myfig.png', dpi=1000)
Note that I used the figure dpi of 100 to fit in most screens, but saved with dpi=1000 to achieve the required resolution. In my system this produces a png with 3840x...
App Inventor 2 网络微数据库后台搭建教程 - 自建TinyWebDB服务 · App Inventor 2 中文网
...服务地址是：
http://公网IP:5000/口令
例如公网 IP 是 47.100.1.2、口令是 3f9a1c7e，服务地址就是 http://47.100.1.2:5000/3f9a1c7e。
如果服务器开着 ufw 防火墙（执行 sudo ufw status 显示 Status: active），还要执行一次 sudo ufw allow 5000/tcp。
...
How do I add a tool tip to a span element?
...
100
Custom Tooltips with pure CSS - no JavaScript needed:
Example here (with code) / Full screen ...
Cross-browser custom styling for file upload button [duplicate]
...
label.myLabel input[type="file"] {
position:absolute;
top: -1000px;
}
/***** Example custom styling *****/
.myLabel {
border: 2px solid #AAA;
border-radius: 4px;
padding: 2px 5px;
margin: 2px;
background: #DDD;
display: inline-block;
}
.myLabel:hov...