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Why are elementwise additions much faster in separate loops than in a combined loop?
..., there is a high chance that large allocations will appear at the same offset from a page-boundary.
Here's the test code:
int main(){
const int n = 100000;
#ifdef ALLOCATE_SEPERATE
double *a1 = (double*)malloc(n * sizeof(double));
double *b1 = (double*)malloc(n * sizeof(double));
d...
SQL Server: What is the difference between CROSS JOIN and FULL OUTER JOIN?
...explains the various types of joins with examples of output given a sample set of tables.
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Concrete Javascript Regex for Accented Characters (Diacritics)
...a range, and this technique exploits the ordering of characters in the charset to define a continuous range, making for a super concise solution to the problem
– Angad
Jun 16 '16 at 7:56
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Finding three elements in an array whose sum is closest to a given number
...pate in any satisfying sum -- so we may as well discard it! Which we do by setting j = j+1 and starting over (though it may help to think in terms of solving a smaller subproblem recursively instead). Likewise if the sum A[j] + A[k] is too high, then we know that A[j'] + A[k] must also be too high ...
Get nth character of a string in Swift programming language
...ould return.
Try it out here
extension StringProtocol {
subscript(offset: Int) -> Character { self[index(startIndex, offsetBy: offset)] }
subscript(range: Range<Int>) -> SubSequence {
let startIndex = index(self.startIndex, offsetBy: range.lowerBound)
return sel...
MySQL Workbench Dark Theme
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There's no dark theme, but I added a high contrast theme. Set your system to dark to make most of the windows using a dark background.
– Mike Lischke
Feb 7 '14 at 17:18
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Haskell function composition (.) and function application ($) idioms: correct use
...been reading Real World Haskell , and I am nearing the end, but a matter of style has been niggling at me to do with the (.) and ($) operators.
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Python assigning multiple variables to same value? list behavior
...1 is actually calling a method on the list object. (It's equivalent to a.__setitem__(0, 1).) So, it's not really rebinding anything at all. It's like calling my_object.set_something(1). Sure, likely the object is rebinding an instance attribute in order to implement this method, but that's not what'...
UITableView : viewForHeaderInSection: not called during reloadData:
I've set up the tableview with correct delegate and datasource linkages.. the reloadData method calls the datasource and the delegate methods except for viewForHeaderInSection: .
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TimeStamp on file name using PowerShell
... editor after snippets, if snippets enabled
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