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Using a bitmask in C#

...6, Sun = 32 } DaysBitMask mask = DaysBitMask.Sat | DaysBitMask.Thu; bool test; if ((mask & DaysBitMask.Sat) == DaysBitMask.Sat) test = true; if ((mask & DaysBitMask.Thu) == DaysBitMask.Thu) test = true; if ((mask & DaysBitMask.Wed) != DaysBitMask.Wed) test = true; // Store...
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Array extension to remove object by value

...with a protocol extension method. removeObject() is defined as a method on all types conforming to RangeReplaceableCollectionType (in particular on Array) if the elements of the collection are Equatable: extension RangeReplaceableCollectionType where Generator.Element : Equatable { // Remove f...
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Conditionally ignoring tests in JUnit 4

OK, so the @Ignore annotation is good for marking that a test case shouldn't be run. 4 Answers ...
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_csv.Error: field larger than field limit (131072)

... The csv file might contain very huge fields, therefore increase the field_size_limit: import sys import csv csv.field_size_limit(sys.maxsize) sys.maxsize works for Python 2.x and 3.x. sys.maxint would only work with Python 2.x (SO: what-is-sys-maxint-in-python-3) Update As Geoff pointed out,...
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Recursively list files in Java

... Files.walk, mostly because there are overloads and it's more convenient. TESTS: As requested I've provided a performance comparison of many of the answers. Check out the Github project which contains results and a test case. ...
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When is it acceptable to call GC.Collect?

... I use GC.Collect only when writing crude performance/profiler test rigs; i.e. I have two (or more) blocks of code to test - something like: GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced); TestA(); // may allocate lots of transient objects GC.Collect(GC.MaxGeneration, GCCollectio...
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Sorting an IList in C#

...ting problem today. We have a WCF web service that returns an IList. Not really a big deal until I wanted to sort it. 15 An...
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Replace only some groups with Regex

...attern = @"-(\d+)-"; var replaced = Regex.Replace(text, pattern, (_match) => { Group group = _match.Groups[1]; string replace = "AA"; return String.Format("{0}{1}{2}", _match.Value.Substring(0, group.Index - _match.Index), replace, _match.Value...
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Mocking static methods with Mockito

...top of Mockito. Example code: @RunWith(PowerMockRunner.class) @PrepareForTest(DriverManager.class) public class Mocker { @Test public void shouldVerifyParameters() throws Exception { //given PowerMockito.mockStatic(DriverManager.class); BDDMockito.given(DriverMana...
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How to play a local video with Swift?

... class ViewController: UIViewController { override func viewDidAppear(_ animated: Bool) { super.viewDidAppear(animated) playVideo() } private func playVideo() { guard let path = Bundle.main.path(forResource: "video", ofType:"m4v") else { debugPrint("...