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What does static_assert do, and what would you use it for?
...n example where static_assert(...) ('C++11') would solve the problem in hand elegantly?
8 Answers
...
Position of least significant bit that is set
...hed. My favourite solution for your problem (from that site) is «multiply and lookup»:
unsigned int v; // find the number of trailing zeros in 32-bit v
int r; // result goes here
static const int MultiplyDeBruijnBitPosition[32] =
{
0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17...
What is the C# equivalent of NaN or IsNumeric?
...s a number
} else {
// it is not a number
}
Incidentally, all of the standard data types, with the glaring exception of GUIDs, support TryParse.
update
secretwep brought up that the value "2345," will pass the above test as a number. However, if you need to ensure that all of the characters wi...
.NET: Which Exception to Throw When a Required Configuration Setting is Missing?
Here's a standard scenario:
11 Answers
11
...
How can I check if a single character appears in a string?
...indexOf() uses loop internally. None of the answers gives correct solution and if someone dares to ask a new question, people declare it Duplicate. Really disappointing ;(
– Prashant Prabhakar Singh
Mar 3 '17 at 7:22
...
Iterate over a Javascript associative array in sorted order
...
You cannot iterate over them directly, but you can find all the keys and then just sort them.
var a = new Array();
a['b'] = 1;
a['z'] = 1;
a['a'] = 1;
function keys(obj)
{
var keys = [];
for(var key in obj)
{
if(obj.hasOwnProperty(key))
{
keys.pus...
Why does ReSharper want to use 'var' for everything?
.... To try it out I opened up a recent ASP.NET MVC project. One of the first and most frequent things I've noticed it suggesting is to change most/all my explicit declarations to var instead. For example:
...
What is the difference between Set and List?
What is the fundamental difference between the Set<E> and List<E> interfaces?
27 Answers
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How to create an array of object literals in a loop?
...s a property lookup that you execute with each iteration, which isn't free and can be avoided. Micro-optimization? Possibly. Also, it is a "live" value - if you modify the array in the loop, the length will change on successive iterations which could lead to infinity. Give this a watch youtube.com...
Rename a class in Xcode: Refactor… is grayed out (disabled). Why?
...
Very sad, almost 2 years later and it still won't refactor the Objective-C objects.
– christophercotton
Apr 10 '11 at 22:42
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