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Func with out parameter
... cannot be marked co- or contravariant and must remain "invariant". So consider public delegate V MyDelegate<in T, U, out V>(T input, out U output); if you use C# 4 or later.
– Jeppe Stig Nielsen
Apr 22 '14 at 10:04
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What is Python buffer type for?
...nk buffers are e.g. useful when interfacing python to native libraries. (Guido van Rossum explains buffer in this mailinglist post).
For example, numpy seems to use buffer for efficient data storage:
import numpy
a = numpy.ndarray(1000000)
the a.data is a:
<read-write buffer for 0x1d7b410, s...
Disable IntelliJ Starred (Package) Imports?
I'm a migrating Eclipse IDE user and am learning my way round IntelliJ IDEA 9.
3 Answers
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Cost of exception handlers in Python
...'s all within the same order of magnitude"... I suspect many people who avoid exceptions do so expecting them to be 10x as slow.
– Garrett Bluma
Nov 6 '11 at 20:16
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ASP MVC href to a controller/view
...ng:
<a asp-controller="Users" asp-action="Index"></a>
(Valid for ASP.NET 5 and MVC 6)
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UIPopovercontroller dealloc reached while popover is still visible
I assure you that I did look for an answer in SO for my question but none of them were helpful. Here I got a simple code that should present a UIImagePickerController within a UIPopoverController :
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SSL handshake alert: unrecognized_name error since upgrade to Java 1.7.0
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it works, thanks! IntelliJ IDEA subversion client had the same error when connecting through HTTPS. Just need to update idea.exe.vmoptions file with line: -Djsse.enableSNIExtension=false
– Dima
Jul 20 '13 at 23:15...
Why are `private val` and `private final val` different?
...ance in Java that final static variables with a literal on the right-hand side get inlined into bytecode as constants. That engenders a performance benefit sure, but it causes binary compatibility of the definition to break if the "constant" ever changed. When defining a final static variable whose ...
Set background color of WPF Textbox in C# code
....Media;
textBox1.Background = Brushes.White;
textBox1.Background = new SolidColorBrush(Colors.White);
textBox1.Background = new SolidColorBrush(Color.FromArgb(0xFF, 0xFF, 0, 0));
textBox1.Background = System.Windows.SystemColors.MenuHighlightBrush;
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NUnit's Assert.Equals throws exception “Assert.Equals should not be used for assertions”
... unit test is certainly a mistake. In order to prevent this mistake and avoid confusion, the developers of NUnit have intentionally hidden Object.Equals in the Assert class with an implementation that throws an exception. Here's the implementation:
/// <summary>
/// The Equals method throws a...