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Is returning null bad design? [closed]
...f I were to define a method in Java that returned a Collection I would typically prefer to return an empty collection (i.e. Collections.emptyList()) rather than null as it means my client code is cleaner; e.g.
Collection<? extends Item> c = getItems(); // Will never return null.
for (Item it...
Error : BinderProxy@45d459c0 is not valid; is your activity running?
...this error reported once in a while from some of my apps when the activity calling the dialog was finishing for some reason or another when it tried to show a dialog. Here's what solved it for me:
if(!((Activity) context).isFinishing())
{
//show dialog
}
I've been using this to work around t...
How to Load an Assembly to AppDomain with all references recursively?
...de I wrote to solve this problem: github.com/jduv/AppDomainToolkit. Specifically, look at the LoadAssemblyWithReferences method in this class: github.com/jduv/AppDomainToolkit/blob/master/AppDomainToolkit/…
– Jduv
Mar 14 '13 at 14:44
...
Adding a cross-reference to a subheading or anchor in another page
...ple using RST are likely to run into both cases at some point:
Sphinx
Besides the domain-specific directives that can be used to link to various entities like classes (:class:) there's the general :ref: directive, documented here. They give this example:
.. _my-reference-label:
Section t...
Clone() vs Copy constructor- which is recommended in java [duplicate]
...and functions to only accept classes that implement Cloneable, then simply call clone(). Without it, I don't believe there is a (good) way to enforce that and you would likely resort to reflection to discover a class's copy constructor. That also makes the assumption that if Foo has a constructor th...
Efficient way to return a std::vector in c++
...turn value (by value) is: instead of 'been moved', the return value in the callee is created on the caller's stack, so all operations in the callee are in-place, there is nothing to move in RVO. Is that correct?
– r0ng
Sep 5 '18 at 5:59
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Best way to add comments in erb
...my team (we were both using linux, but different distros), regardless I avoid it since..
– vise
May 5 '10 at 21:57
4
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Best way to change the background color for an NSView
...
@Patrick - You might need to call super drawRect :) or if you have some other things that are supposed to be drawn on top of the background, make sure that they are after the NSRectFill call.
– BadPirate
Apr 26 '13 ...
Syntax behind sorted(key=lambda: …)
...
key is a function that will be called to transform the collection's items before they are compared. The parameter passed to key must be something that is callable.
The use of lambda creates an anonymous function (which is callable). In the case of sorted...
Add line break to ::after or ::before pseudo-element content
...XX \A Mobile: YYYYY ";
white-space: pre; /* or pre-wrap */
}
http://jsfiddle.net/XkNxs/
When escaping arbitrary strings, however, it's advisable to use \00000a instead of \A, because any number or [a-f] character followed by the new line may give unpredictable results:
function addTextToStyle(...