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Xcode + remove all breakpoints
...command-select breakpoints in outline, press Delete
Run > Console, when app is paused, type "delete breakpoints" and press Return
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Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?
...e multiplies in it, no divide. => Faster!
And: the full update step new_x = x + dx then reads:
x *= 3/2 - y/2 * x * x which is easy too.
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Why can't a text column have a default value in MySQL?
...r platforms it is often a warning. While not a bug, it's possible to get trapped by this if you write code on a lenient platform, and later run it on a strict platform:
Personally, I do view this as a bug. Searching for "BLOB/TEXT column can't have a default value" returns about 2,940 results on ...
C compiler for Windows? [closed]
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This binds your app to the Cygwin DLL, which is really irritating, in my opinion.
– Alex M
Sep 22 '08 at 17:58
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How do I declare a 2d array in C++ using new?
...nah, it's not clever at all: it's obvious.
class Matrix
{
...
size_t index( int x, int y ) const { return x + m_width * y; }
};
Given this index() function (which I'm imagining is a member of a class because it needs to know the m_width of your matrix), you can access cells within your ma...
Why are arrays of references illegal?
...late classes using an array as a 'class' template parameter, and see what happens. You can't return them, assign them, pass them as parameters. ( an array param is treated as a pointer). But it is legal to make arrays of arrays.
References do have a size that the compiler can and must calculate - yo...
Need to understand the usage of SemaphoreSlim
...tomdupont.net/2016/03/how-to-release-semaphore-with-using.html
I did swap _isDisposed=true and _semaphore.Release() around in its Dispose though in case it somehow got called multiple times.
Also it is important to note SemaphoreSlim is not a reentrant lock, meaning if the same thread calls WaitA...
What reason is there to use null instead of undefined in JavaScript?
...vars to null. Then I'm (pretty) sure that undefined means that a disaster happened. Just imho.
– Pete Wilson
Jul 7 '11 at 1:14
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Make UINavigationBar transparent
...gation bar with an opaque custom background image, the navigation bar will apply a system opacity less than 1.0 to the image.
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Parse large JSON file in Nodejs
...d to hear if it works.
It does work consider the following Javascript and _.isString:
stream.pipe(JSONStream.parse('*'))
.on('data', (d) => {
console.log(typeof d);
console.log("isString: " + _.isString(d))
});
This will log objects as they come in if the stream is an array of obj...