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Difference between method and function in Scala
...l):
def apply(v1: T1, v2: T2): R
And that tell us all that there is to know about it. A function has an apply method which receives N parameters of types T1, T2, ..., TN, and returns something of type R. It is contra-variant on the parameters it receives, and co-variant on the result.
That varia...
Android search with Fragments
Does somebody know of a tutorial or an example of how to implement the standard Android search interface with Fragment s? In other words, is it possible to put a standard search with a SearchManager in a Fragment?
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TypeError: module.__init__() takes at most 2 arguments (3 given)
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Wiil it work the same, if one omit ClassName completely? Like class Visitor()?
– VMAtm
Jan 24 '17 at 14:23
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How do exceptions work (behind the scenes) in c++
...that exceptions are slow, but I never see any proof. So, instead of asking if they are, I will ask how do exceptions work behind the scenes, so I can make decisions of when to use them and whether they are slow.
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Rolling or sliding window iterator?
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Nice answer, but (and I know you're just reproducing the recipe as linked), I wonder why the default window size should be 2? Should it have a default at all?
– SingleNegationElimination
Jul 25 '11 at 22:02
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Haskell Type vs Data Constructor
...ith how binary trees work, just hang in there. You don't actually need to know how binary trees work, only that this one stores Strings in some way.
We also see that both data constructors take a String argument – this is the String they are going to store in the tree.
But! What if we also wante...
Best practice: PHP Magic Methods __set and __get [duplicate]
...tters, but in many cases that does not really matter; what's a millisecond if not used frequently? You can get autocomplete (at least in PhpStorm) by setting PHPDoc's @property which also provides documentation and the last point about consistency is merely opinion and opinions vary (see user187291'...
Best practices for circular shift (rotate) operations in C++
Left and right shift operators (>) are already available in C++.
However, I couldn't find out how I could perform circular shift or rotate operations.
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How to get current time and date in C++?
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In C++ 11 you can use std::chrono::system_clock::now()
Example (copied from en.cppreference.com):
#include <iostream>
#include <chrono>
#include <ctime>
int main()
{
auto start = std::chrono::system_clock::now();
// Some computation here
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Better way to get type of a Javascript variable?
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Ah, I'd forgotten about that - thank you, it's now included.
– Vix
Feb 26 '16 at 9:20
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