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returning a Void object
...id.
So any of the following would suffice:
parameterizing with Object and returning new Object() or null
parameterizing with Void and returning null
parameterizing with a NullObject of yours
You can't make this method void, and anything else returns something. Since that something is ignored,...
Returning multiple objects in an R function [duplicate]
...ava, I would make a Class, maybe Person which has some private variables and encapsulates, maybe, height , age , etc.
...
throw Error('msg') vs throw new Error('msg')
... in the chrome console, they look identical. Same properties on the object and the same __proto__ chain. Almost seems like Error acts like a factory.
...
Protected in Interfaces
...but then you can make a fully abstract class, which is all interfaces are, and specify whatever access you want. Granted this loses the benefit of multiple implementations that interfaces get in Java, but honestly establishing a contract that adheres to limitations of some other package would be unt...
How to prevent multiple instances of an Activity when it is launched with different Intents
... using the "Open" button on the Google Play Store app (previously called Android Market). It seems that launching it from the Play Store uses a different Intent than launching it from the phone's application menu of icons. This is leading to multiple copies of the same Activity being launched, w...
What are the recommendations for html tag?
...re deciding whether to use the <base> tag or not, you need to understand how it works, what it can be used for and what the implications are and finally outweigh the advantages/disadvantages.
The <base> tag mainly eases creating relative links in templating languages as you don't need...
How to populate/instantiate a C# array with a single value?
...
i++ copies i, increments i, and returns the original value. ++i just returns the incremented value. Therefore ++i is faster, which can be significant in large loops like we're talking about here.
– tenpn
Nov 8 '12 ...
defaultdict of defaultdict?
...ultdict(int)) will be called when you try to access a key that don't exist and the return value of it will be set as the new value of this key which mean in our case the value of d[Key_dont_exist] will be defaultdict(int), and if you try to access a key from this last defaultdict i.e. d[Key_dont_exi...
Static linking vs dynamic linking
... presence in most environments. Here "resources" includes disk space, RAM, and cache space. Of course, if your dynamic linker is insufficiently flexible there is a risk of DLL hell.
Dynamic linking means that bug fixes and upgrades to libraries propagate to improve your product without requiring you...
How to use RSpec's should_raise with any kind of exception?
...e_method }.should raise_error
See the documentation (for RSpec 1 syntax) and RSpec 2 documentation for more.
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