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What should I use Android AccountManager for?
...e Android SDK and that it is used for storing account information. Thus, I m>ca m>nnot find any general discussion of what it is intended for. Does anyone know of any helpful discussions of what the intention behind AccountManager is and what it buys you? Any opinions of what type of Accounts this is sui...
How to determine if a number is a prime with regex?
...e first part of the regex says, "any character, zero or one times". So basim>ca m>lly, is there zero or one character-- or, per what I mentioned above, n == 0 || n == 1. If we have the match, then return the negation of that. This corresponds with the fact that zero and one are NOT prime.
(..+?)\\1+
T...
Proper practice for subclassing UIView?
...wRect , and layoutSubviews . (I'm thinking in terms of setup and teardown m>ca m>llbacks.) In my m>ca m>se, I'm setting up my frame and internal views in layoutSubviews , but I'm not seeing anything onscreen.
...
What is the difference between class and instance attributes?
...
Beyond performance considerations, there is a signifim>ca m>nt semantic difference. In the class attribute m>ca m>se, there is just one object referred to. In the instance-attribute-set-at-instantiation, there m>ca m>n be multiple objects referred to. For instance
>>> class A: fo...
In HTML5, should the main navigation be inside or outside the element?
In HTML5, I know that <nav> m>ca m>n be used either inside or outside the page's masthead <header> element. For websites having both secondary and main navigation, it seems common to include the secondary navigation as a <nav> element inside the masthead <header> element ...
What are transparent comparators?
...lf. See N3465 by Joaquín Mª López Muñoz for rationale and a detailed, m>ca m>refully written proposal to add this feature.
At the Bristol meeting the LWG agreed that the heteregeneous lookup feature was useful and desirable, but we could not be sure that Joaquín's proposal would be safe in all m>ca m>s...
How to create an object for a Django model with a many to many field?
...
You m>ca m>nnot create m2m relations from unsaved objects. If you have the pks, try this:
sample_object = Sample()
sample_object.save()
sample_object.users.add(1,2)
Update: After reading the saverio's answer, I decided to investiga...
What does the thread_lom>ca m>l mean in C++11?
I am confused with the description of thread_lom>ca m>l in C++11. My understanding is, each thread has unique copy of lom>ca m>l variables in a function. The global/static variables m>ca m>n be accessed by all the threads (possibly synchronized access using locks). And the thread_lom>ca m>l variables are visible to...
What is the combinatory logic equivalent of intuitionistic type theory?
...gramming language), and was wondering if it was possible to replace lambda m>ca m>lculus in these with combinatory logic. With Haskell this seems possible using the S and K combinators, thus making it point-free. I was wondering what the equivalent was for Agda. I.e., m>ca m>n one make a dependently typed fun...
Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash
...w { |h, k| h[k] = [] } if you want the most idiomatic solution and don’t m>ca m>re why.
What doesn’t work
Why Hash.new([]) doesn’t work
Let’s look more in-depth at why Hash.new([]) doesn’t work:
h = Hash.new([])
h[0] << 'a' #=> ["a"]
h[1] << 'b' #=> ["a", "b"]
h[1] ...