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Optimizing away a “while(1);” in C++0x
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Does someone have a good explanation of why this was necessary to allow?
Yes, Hans Boehm provides a rationale for this in N1528: Why undefined behavior for infinite loops?, although this is WG14 document the rationale applies to C++ as well and the documen...
How do I detect when someone shakes an iPhone?
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In 3.0, there's now an easier way - hook into the new motion events.
The main trick is that you need to have some UIView (not UIViewController) that you want as firstResponder to receive the shake event messages. Here's the code that you can use in any UIView to get shake events:...
Which is the preferred way to concatenate a string in Python?
...string. And this can be true, in some cases. Here, for example, is one
million appends of a one-character string, first to a string, then to a list:
a += b:
0.10780501365661621
a.append(b):
0.1123361587524414
OK, turns out that even when the resulting string is a million characters long, appendin...
How often does python flush to a file?
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For file operations, Python uses the operating system's default buffering unless you configure it do otherwise. You can specify a buffer size, unbuffered, or line buffered.
For example, the open function takes a buffer size argument.
htt...
IOCTL Linux device driver [closed]
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An ioctl, which means "input-output control" is a kind of device-specific system call. There are only a few system calls in Linux (300-400), which are not enough to express all the unique functions devices may have. So a driver ...
Spring Test & Security: How to mock authentication?
...he Spring Security Reference and I realized there are near to perfect solutions. AOP solutions often are the greatest ones for testing, and Spring provides it with @WithMockUser, @WithUserDetails and @WithSecurityContext, in this artifact:
<dependency>
<groupId>org.springframework.se...
What breaking changes are introduced in C++11?
...ges in C++11 that will cause some old code to stop compiling: the introduction of explicit operator bool() in the standard library, replacing old instances of operator void*() . Granted, the code that this will break is probably code that should not have been valid in the first place, but it's st...
How to download a file from a URL in C#?
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The best solution ever but I would like to add 1 important line 'client.Credentials = new NetworkCredential("UserName", "Password");'
– Developer
Sep 7 '16 at 13:11
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How do I know that the UICollectionView has been loaded completely?
I have to do some operation whenever UICollectionView has been loaded completely, i.e. at that time all the UICollectionView's datasource / layout methods should be called. How do I know that?? Is there any delegate method to know UICollectionView loaded status?
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Example of Named Pipes
How do I write a simple--bare minimum needed for it to work--test application that illustrates how to use IPC/Named Pipes?
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