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What's the purpose of using braces (i.e. {}) for a single-line if or loop?
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@Science_Fiction: True, but if you add i++ before j++, then both variables will still be in scope when they're used.
– Mike Seymour
Aug 30 '12 at 9:03
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How do I animate constraint changes?
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[UIView animateWithDuration:5
animations:^{
self._addBannerDistanceFromBottomConstraint.constant = -32;
[self.view layoutIfNeeded]; // Called on parent view
}];
bannerIsVisible = FALSE;
}
- (void)moveBannerOnScreen {
[self.view layoutIfNeeded];...
How do I efficiently iterate over each entry in a Java Map?
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Benchmark Mode Cnt Score Error Units
test3_UsingForEachAndJava8 avgt 10 0.308 ± 0.021 µs/op
test10_UsingEclipseMap avgt 10 0.309 ± 0.009 µs/op
test1_UsingWhileAndMapEntry avgt 10 0.380 ± 0.014 µs/op
test6_UsingForAndIte...
AngularJS sorting by property
...'s rows in the filter e.g. for(var objectKey in input) { input[objectKey]['_key'] = objectKey; array.push(input[objectKey]); } Like that we can use <div ng-repeat="value in object | orderObjectBy:'order'" ng-init="key = value['_key']">
– Nicolas Janel
Jul...
LINQ to SQL Left Outer Join
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Public Sub LinqToSqlJoin07()
Dim q = From e In db.Employees _
Group Join o In db.Orders On e Equals o.Employee Into ords = Group _
From o In ords.DefaultIfEmpty _
Select New With {e.FirstName, e.LastName, .Order = o}
ObjectDumper.Write(q) End Sub
Check http:...
CORS - How do 'preflight' an httprequest?
...d to detect such a request, and add the "Access-Control-Allow-Origin: " . $_SERVER['HTTP_ORIGIN'] header, after detecting that this was a cross-origin XHR.
PHP Code sample:
if (!empty($_SERVER['HTTP_ORIGIN'])) {
// Uh oh, this XHR comes from outer space...
// Use this opportunity to filte...
How to limit UITableView row reordering to a section
...s answer for you lazy people:
Swift 3, 4 & 5
override func tableView(_ tableView: UITableView, targetIndexPathForMoveFromRowAt sourceIndexPath: IndexPath, toProposedIndexPath proposedDestinationIndexPath: IndexPath) -> IndexPath {
if sourceIndexPath.section != proposedDestinationIndexPa...
Can Selenium interact with an existing browser session?
...open a driver
driver = webdriver.Firefox() #python
extract to session_id and _url from driver object.
url = driver.command_executor._url #"http://127.0.0.1:60622/hub"
session_id = driver.session_id #'4e167f26-dc1d-4f51-a207-f761eaf73c31'
Use these two parameter to connect...
How do I insert datetime value into a SQLite database?
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Use CURRENT_TIMESTAMP when you need it, instead OF NOW() (which is MySQL)
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Pass Variables by Reference in Javascript
...;
return context[name];
}
}
Variable Declaration
rvar('test_ref');
test_ref = 5; // test_ref.value = 5
Or:
rvar('test_ref', 5); // test_ref.value = 5
Test Code
rvar('test_ref_number');
test_ref_number = 5;
function Fn1 (v) { v.value = 100; }
console.log("rvar('test_ref_number')...