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How do I check if a variable exists?
... State variables don't exist before they are assigned - if you draw a line from the previous position to the current position, then set previous = current, it doesn't mean you "don't know your variables" on the first call. And writing an extra line of code to initialize previous=null outside the dr...
AngularJS : Factory and Service? [duplicate]
... }]);
}
It just a wrapper around the factory. If you return something from service, then it will behave like Factory.
IMPORTANT: The return result from Factory and Service will be cache and same will be returned for all controllers.
When should i use them?
Factory is mostly preferable in all...
Begin, Rescue and Ensure in Ruby?
...n leave out the exception class, in which case all exceptions that inherit from StandardError will be caught. (Please note that this does not mean that all exceptions are caught, because there are exceptions which are instances of Exception but not StandardError. Mostly very severe exceptions that c...
Node.js on multi-core machines
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705
[This post is up-to-date as of 2012-09-02 (newer than above).]
Node.js absolutely does scale o...
Import package.* vs import package.SpecificType [duplicate]
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Minority view: in my code I tend to use tons of classes from a few packages along with a few odd classes here and there. I like to keep my imports list small so I can tell what is going on at a glance. To do this, I set the threshold at 4 classes. Above that, Eclipse will use * fo...
Command prompt won't change directory to another drive
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The short answer
The correct way to go from C:\...\Adminto D:\Docs\Java drive, is the following command :
cd /d d:\Docs\Java
More details
If you're somewhere random on your D:\ drive, and you want to go to the root of your drive, you can use this command :
...
Is there a foreach in MATLAB? If so, how does it behave if the underlying data changes?
...ector, not column vector. If A is a matrix, each k will be a column vector from that matrix. So, transpose(A') or vectorize (A(:)') if needed.
– yuk
Dec 8 '11 at 17:36
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Deleting all files in a directory with Python
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answered Jan 3 '10 at 16:02
mikumiku
153k4141 gold badges276276 silver badges293293 bronze badges
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Cloning a private Github repo
...ght a laptop, and am trying to set it up so that I can work on the project from either computer, and push / pull changes.
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HTML entity for the middle dot
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290
It's called a middle dot: ·
HTML entities:
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In CSS:
\0...