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How is null + true a string?
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null will be cast to null string, and there is implicit converter from bool to string so the true will be cast to string and then, + operator will be applied: it's like: string str = "" + true.ToString();
if you check it with Ildasm:
st...
Parsing boolean values with argparse
...e,True], you end up with both "False" and "True" considered True (due to a cast from string to bool?). Maybe related issue
– dolphin
Jul 20 '13 at 1:03
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How do you stop MySQL on a Mac OS install?
I installed MySQL via MacPorts . What is the command I need to stop the server (I need to test how my application behave when MySQL is dead)?
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Cannot set some HTTP headers when using System.Net.WebRequest
...cause of multiple ways to do this. When using WebRequest.Create() you can cast to an HttpWebRequest and use the property to add or modify a header. When using a WebHeaderCollection you may use the .Add("referer","my_url").
Ex 1
WebClient client = new WebClient();
client.Headers.Add("referer", "ht...
How do I convert an integer to binary in JavaScript?
...es)
Before operations are applied the 64 bit floating points numbers are cast to 32 bit signed integers. After they are converted back.
Here is the MDN example code for converting numbers into 32-bit strings.
function createBinaryString (nMask) {
// nMask must be between -2147483648 and 214748...
Why does Android use Java? [closed]
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Some points:
Java is a known language, developers know it and don't have to learn it
it's harder to shoot yourself with Java than with C/C++ code since it has no pointer arithmetic
it runs in a VM, so no need to recompile it for every phone out there and easy to secure
large number ...
使用CSplitterWnd实现拆分窗口（多视图显示） - C/C++ - 清泛网 - 专注C/C++及内核技术
...行了划分和初始化
//获取主窗口
CMainFrame* pFrame=static_cast<CMainFrame*>(AfxGetMainWnd());
//获取某个view
CMyTreeView* pView=static_cast<CMyTreeView*>(pFrame->m_wndTopSplitter.GetPane(0,0));
//激活View
pFrame->SetActiveView(pView);
pFrame->m_wndTopSplitter.RecalcLayo...
How do I find the location of Python module sources?
...king at themodule.__file__.
The datetime module, however, is written in C, and therefore datetime.__file__ points to a .so file (there is no datetime.__file__ on Windows), and therefore, you can't see the source.
If you download a python source tarball and extract it, the modules' code can be found...
VBoxManage: error: Failed to create the host-only adapter
I am running vagrant 1.4 and virtual box 4.3 on fedora 17 machine. When I do "vagrant up", I get this error:
32 Answers...
In Objective-C, what is the equivalent of Java's “instanceof” keyword?
I would like to check whether an object (e.g. someObject ) is assignable (cast-able) to a variable of another type (e.g. SpecifiedType ). In Java, I can write:
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