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Covariance, Invariance and Contravariance explained in plain English?
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3 Answers
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Creating default object from empty value in PHP?
...have E_STRICT warnings enabled in error_reporting for PHP versions <= 5.3.x, or simply have error_reporting set to at least E_WARNING with PHP versions >= 5.4. That error is triggered when $res is NULL or not yet initialized:
$res = NULL;
$res->success = false; // Warning: Creating default...
How to develop or migrate apps for iPhone 5 screen resolution?
... new iPhone 5 display has a new aspect ratio and a new resolution (640 x 1136 pixels).
30 Answers
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What is the difference between Culture and UICulture?
...e are a few examples:
var date = new DateTime(2000, 1, 2);
var number = 12345.6789;
Thread.CurrentThread.CurrentCulture = new CultureInfo("de-DE");
Console.WriteLine(date); // 02.01.2000 00:00:00
Console.WriteLine(number.ToString("C")); // 12.345,68 €
Thread.CurrentThread.CurrentCulture = new C...
Possible heap pollution via varargs parameter
...le)
– hertzsprung
Sep 17 '12 at 16:03
37
I've found an explanation of heap pollution on programme...
Pretty-Print JSON in Java
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293
GSON can do this in a nice way:
Gson gson = new GsonBuilder().setPrettyPrinting().create();
Jso...
Can extension methods be applied to interfaces?
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AaronaughtAaronaught
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Convert String to equivalent Enum value
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answered Aug 14 '11 at 13:10
adarshradarshr
55.1k2121 gold badges128128 silver badges156156 bronze badges
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Fastest way to convert Image to Byte array
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39
So is there any other method to achieve this goal?
No. In order to convert an image to a b...
Java 8: performance of Streams vs Collections
... Units
StreamVsVanilla.stream avgt 10 17.588 0.230 ns/op
StreamVsVanilla.vanilla avgt 10 10.796 0.063 ns/op
Just as I expected stream implementation is fairly slower. JIT is able to inline all lambda stuff but doesn't produce as perfectly co...