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Why does Math.Floor(Double) return a value of type Double?
...r is outside the range of long - so what would you expect to happen?
Typically you know that the value will actually be within the range of int or long, so you cast it:
double d = 1000.1234d;
int x = (int) Math.Floor(d);
but the onus for that cast is on the developer, not on Math.Floor itself. I...
Is HTML5 localStorage asynchronous?
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Nope, all localStorage calls are synchronous.
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Difference between `constexpr` and `const`
...zation.
constexpr declares an object as fit for use in what the Standard calls constant expressions. But note that constexpr is not the only way to do this.
When applied to functions the basic difference is this:
const can only be used for non-static member functions, not functions in general. I...
Where is C not a subset of C++? [closed]
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@FUZxxl really? What will be the deduced type of a?
– Johannes Schaub - litb
Jul 22 '15 at 16:21
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What is the difference between -viewWillAppear: and -viewDidAppear:?
...gether with the view, right away, I put it in the ViewDidLoad method. Basically this method is called whenever the view was loaded into memory. So for example, if my view is a form with 3 labels, I would add the labels here; the view will never exist without those forms.
2) ViewWillAppear: I use Vi...
Why is MATLAB so fast in matrix multiplication?
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Here's my results using MATLAB R2011a + Parallel Computing Toolbox on a machine with a Tesla C2070:
>> A = rand(1024); gA = gpuArray(A);
% warm up by executing the operations a couple of times, and then:
>> tic, C = A * A; toc
Elapsed time is 0.075396 sec...
Javascript reduce on array of objects
...eration 2: a = 3, b = {x:2} returns NaN
A number literal 3 does not (typically) have a property called x so it's undefined and undefined + b.x returns NaN and NaN + <anything> is always NaN
Clarification: I prefer my method over the other top answer in this thread as I disagree with the ide...
What is (functional) reactive programming?
...read the Wikipedia article on reactive programming . I've also read the small article on functional reactive programming . The descriptions are quite abstract.
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How to do a PUT request with curl?
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"man curl" on -X: "Normally you don't need this option. All sorts of GET, HEAD, POST and PUT requests are rather invoked by using dedicated command line options." But I couldn't find another way.
– Martin C. Martin
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Why no love for SQL? [closed]
...traction layer.
But it's true - there are no feasible alternatives. So we all will use SQL for the next few years.
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