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What is the difference between `let` and `var` in swift?
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C and C++ allows Unicode identifiers as well, via UCNs. If the compiler supports any Unicode source encoding then you can just use the Unicode characters directly. For example auto ???????? = "dogcow"; works in C++ for clang.
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“register” keyword in C?
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Worth adding for people using C++, C++ lets you take the address of a register variable
– Will
Mar 30 '12 at 16:07
5
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Separating class code into a header and cpp file
...you also can use #pragma once. Also I have omitted the private, by default C++ class members are private.
// A2DD.h
#ifndef A2DD_H
#define A2DD_H
class A2DD
{
int gx;
int gy;
public:
A2DD(int x,int y);
int getSum();
};
#endif
and the implementation goes in the CPP file:
// A2DD.cpp
#...
Avoiding if statement inside a for loop?
...ormance penalty.
The idea of passing in what varies is ubiquitous in the C++ Standard Library. It is called the strategy pattern.
If you are allowed to use C++11, you can do something like this:
#include <iostream>
#include <set>
#include <vector>
template <typename Contain...
How to study design patterns? [closed]
... can u recommend some books for TDD and refactoring majorly in C++
– anand
Apr 20 '13 at 3:57
2
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Can you use a trailing comma in a JSON object?
...For example, code to output from an array of strings might look like (in a C++ like pseudocode):
19 Answers
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Static variables in member functions
...an someone please explain how static variables in member functions work in C++.
4 Answers
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How to get current timestamp in milliseconds since 1970 just the way Java gets
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If you have access to the C++ 11 libraries, check out the std::chrono library. You can use it to get the milliseconds since the Unix Epoch like this:
#include <chrono>
// ...
using namespace std::chrono;
milliseconds ms = duration_cast< mi...
Does Qt support virtual pure slots?
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Yes, just like regular c++ pure virtual methods. The code generated by MOC does call the pure virtual slots, but that's ok since the base class can't be instantiated anyway...
Again, just like regular c++ pure virtual methods, the class cannot be ...
How to overload std::swap()
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In C++2003 it's at best underspecified. Most implementations do use ADL to find swap, but no it's not mandated, so you can't count on it. You can specialize std::swap for a specific concrete type as shown by the OP; just don't...