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What are the differences between Abstract Factory and Factory design patterns?

... Difference Between The Two The main difference between a "factory method" and an "abstract factory" is that the factory method is a method, and an abstract factory is an object. I think a lot of people get these two terms confused, and start using them interchangeably. I remember that I had a hard ...
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django - why is the request.POST object immutable?

...nts a full set of mutation methods including __setitem__, __delitem__, pop and clear. It implements immutability by checking a flag when you call one of the mutation methods. And when you call the copy method you get another QueryDict instance with the mutable flag turned on. For performance improve...
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Get cookie by name

...tring . The first (left) element is string of what was before the token, and the second one (right) is what is string of what was after the token. (NOTE: in case string starts with a token, first element is an empty string) Considering that cookies are stored as follows: "{name}={value}; {name}...
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JavaScript % (modulo) gives a negative result for negative numbers

...ug". The modulo operation is not very well defined over negative numbers, and different computing environments handle it differently. Wikipedia's article on the modulo operation covers it pretty well. – Daniel Pryden Dec 17 '10 at 4:08 ...
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jQuery AJAX submit form

I have a form with name orderproductForm and an undefined number of inputs. 20 Answers ...
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What is the difference between git am and git apply?

Both git am and git apply can be used to apply patches. I fail to see the difference. I see a difference now: git am automatically commits whereas git apply only touches the files but doesn't create a commit. Is that the only difference? ...
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Generate Java class from JSON?

...on a lot. It's still in draft (not finalised) but it's close to completion and is now a viable tool specifying your structural rules I've recently started a new open source project specifically intended to solve your problem: jsonschema2pojo. The jsonschema2pojo tool takes a json schema document an...
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How to round a number to significant figures in Python

... You should use log10(abs(x)), otherwise negative numbers will fail (And treat x == 0 separately of course) – Tobias Kienzler Jul 30 '13 at 8:06 2 ...
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What's the simplest way to subtract a month from a date in Python?

...// 12 if not m: m = 12 d = min(date.day, [31, 29 if y%4==0 and (not y%100==0 or y%400 == 0) else 28, 31,30,31,30,31,31,30,31,30,31][m-1]) return date.replace(day=d,month=m, year=y) >>> for m in range(-12, 12): print(monthdelta(datetime.now(), m)) 2009-...
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Difference between and text

... you more layout freedom over the design of the button. In all its intents and purposes, it seemed excellent at first, but various browser quirks make it hard to use at times. In your example, IE6 will send text to the server, while most other browsers will send nothing. To make it cross-browser c...