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Algorithm for creating a school timetable
...s heuristic. I named it "recursive swapping".
Input: a set of activities A_1...A_n and the constraints.
Output: a set of times TA_1...TA_n (the time slot of each activity. Rooms are excluded here, for simplicity). The algorithm must put each activity at a time slot, respecting constraints. Each TA...
URL-parameters and logic in Django class-based views (TemplateView)
...re using a TemplateView which means that you would do the logic in your get_context_data override.
– Ngenator
Apr 2 '13 at 12:58
4
...
UITableView - change section header color
...lor:[UIColor clearColor]];
return headerView;
}
Swift:
func tableView(_ tableView: UITableView!, viewForHeaderInSection section: Int) -> UIView!
{
let headerView = UIView(frame: CGRect(x: 0, y: 0, width: tableView.bounds.size.width, height: 30))
if (section == integerRepresentingYourSect...
Exclude a directory from git diff
... -s extglob), you could handle that from the shell side:
git diff previous_release current_release !(spec)
Saves you having to list all other things.
Or, shell-agnostic:
git diff previous_release current_release --name-only | grep -v '^spec/' \
| xargs git diff previous_release current_rele...
Python group by
....groupby but it requires the input to be sorted first.
>>> sorted_input = sorted(input, key=itemgetter(1))
>>> groups = groupby(sorted_input, key=itemgetter(1))
>>> [{'type':k, 'items':[x[0] for x in v]} for k, v in groups]
[{'items': ['5238761', '5349618', '962142', '779...
Forward declaring an enum in C++
...at takes or returns a C, before fully defining C?
– j_random_hacker
Mar 26 '09 at 9:01
112
@j_ran...
How to prevent a jQuery Ajax request from caching in Internet Explorer?
...
A word of caution: this adds "?_=somenumber" to your URL. Make sure your back end can ignore the "_" in the URL's query parameters.
– user3458
Sep 26 '13 at 19:34
...
How to turn off INFO logging in Spark?
...
Inspired by the pyspark/tests.py I did
def quiet_logs(sc):
logger = sc._jvm.org.apache.log4j
logger.LogManager.getLogger("org"). setLevel( logger.Level.ERROR )
logger.LogManager.getLogger("akka").setLevel( logger.Level.ERROR )
Calling this just after creating...
Sorting an IList in C#
...: IComparer<T>, IComparer
{
private readonly Comparison<T> _comparison;
public ComparisonComparer(Comparison<T> comparison)
{
_comparison = comparison;
}
public int Compare(T x, T y)
{
return _comparison(x, y);
}
public int Compare...
How do I verify a method was called exactly once with Moq?
...ic class CalculatorTests
{
[TestMethod]
public void WhenAddIsCalled__ItShouldCallPrint()
{
/* Arrange */
var iPrinterMock = new Mock<IPrinter>();
// Let's mock the method so when it is called, we handle it
iPrinterMock.Setup(x => x.Print(It.IsAny...