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Undefined, unspecified and implementation-defined behavior
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Undefined behavior is one of those aspects of the C and C++ language that can be surprising to programmers coming from other languages (other languages try to hide it better). Basically, it is possible to write C++ programs that do not behave in ...
Printing leading 0's in C?
...use "%02d" (Useful for dates) this would only pad zeros for numbers in the ones column ie.(06 instead of 6). Example 2, "%03d" would pad 2 zeros for one number in the ones column and pad 1 zero for a number in the tens column. ie. (number 7 padded to 007 and number 17 padded to 017).
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What is a loop invariant?
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There is one thing that many people don't realize right away when dealing with loops and invariants. They get confused between the loop invariant, and the loop conditional ( the condition which controls termination of the loop ).
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Templated check for the existence of a class member function?
...E test
template <typename T>
class has_helloworld
{
typedef char one;
struct two { char x[2]; };
template <typename C> static one test( decltype(&C::helloworld) ) ;
template <typename C> static two test(...);
public:
enum { value = sizeof(test<T>...
How to round a number to significant figures in Python
I need to round a float to be displayed in a UI. E.g, to one significant figure:
20 Answers
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Zipping streams using JDK8 with lambda (java.util.stream.Streams.zip)
...s and it's up for the user to decide what behavior should be the "correct" one. Would you discard the elements from the longer stream or pad the shorter list? If so, with what value(s)?
– siki
Jun 29 '15 at 14:47
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Quicksort: Choosing the pivot
When implementing Quicksort, one of the things you have to do is to choose a pivot. But when I look at pseudocode like the one below, it is not clear how I should choose the pivot. First element of list? Something else?
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Division of integers in Java [duplicate]
...ote that you don't actually need to convert both of the inputs. So long as one of them is double, the other will be implicitly converted. But I prefer to do both, for symmetry.
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WPF OpenFileDialog with the MVVM pattern? [duplicate]
.... I'm showing them both here so you don't think I'm suggesting you create one interface with one method to get around this problem.
public interface IOService
{
string OpenFileDialog(string defaultPath);
//Other similar untestable IO operations
Stream OpenFile(string path);
}
In ...
How to limit google autocomplete results to City and Country only
...on
function initialize() {
var options = {
types: ['(cities)'],
componentRestrictions: {country: "us"}
};
var input = document.getElementById('searchTextField');
var autocomplete = new google.maps.places.Autocomplete(input, options);
}
More info:
ISO 3166-1 alpha-2 can be used to restr...