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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
...
How do I clear a search box with an 'x' in bootstrap 3?
..."></span>
</div>
and some CSS:
#searchinput {
width: 200px;
}
#searchclear {
position: absolute;
right: 5px;
top: 0;
bottom: 0;
height: 14px;
margin: auto;
font-size: 14px;
cursor: pointer;
color: #ccc;
}
and Javascript:
$("#searchclear")....
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
...
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 get current timestamp in milliseconds since 1970 just the way Java gets
...
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?
...
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 check visibility of software keyboard in Android?
...) - activityRootView.getHeight();
if (heightDiff > dpToPx(this, 200)) { // if more than 200 dp, it's probably a keyboard...
// ... do something here
}
}
});
Using a utility such as:
public static float dpToPx(Context context, float valueInDp) {
DisplayMetr...
Using bitwise OR 0 to floor a number
...FFF) === 2147483647
(2147483647 & 0xFFFFFFFF) === 2147483647
(200.59082098 & 0xFFFFFFFF) === 200
(0X7FFFFFFF & 0xFFFFFFFF) === 0X7FFFFFFF
// Unsafe
(2147483648 & 0xFFFFFFFF) === -2147483648
(-2147483649 & 0xFFFFFFFF) === 2147483647
(0x80000000 ...
Static variables in member functions
...an someone please explain how static variables in member functions work in C++.
4 Answers
...
How to overload std::swap()
...
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...