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What are some (concrete) use-cases for metaclasses?
... This is true for Python 3 as well, because a class B, inheriting from A, whose metaclass is M, is also a type-of M. So, when B is evaluated, M is invoked to create it, and this effectively allows you to "work on any subclasses" (of A). Having said that, Python 3.6 introduced the much simpl...
find() with nil when there are no records
... A reason to use this rather than find_by_id is that it's portable from Rails 3 to 4. In rails 4, it's find_by(:id => 10).
– Gene
Jun 9 '14 at 23:42
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array_push() with key value pair
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answered Aug 30 '09 at 22:22
dusoftdusoft
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How to implement infinity in Java?
...(i.e., there is a bit pattern that specifically means 'infinity', distinct from the maximum value of the type). Double and Float have MAX_VALUE, in common with Integer.
– David Morris
Nov 6 '13 at 19:26
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List of All Locales and Their Short Codes?
...DR dataset, so some of those other functions might give some discrepancies from the CLDR ones, especially as international efforts standardise more on CLDR. You may have to use some of those other functions as a fall-back if catering for pre 5.6.
– Patanjali
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What do < and > stand for?
... and "Right Tag", but maybe RT was taken by Return, so it's using letter G from right instead of R...
– jeffkee
Oct 30 '19 at 23:34
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setBackground vs setBackgroundDrawable (Android)
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It prevented me from compiling. I put the problematic code in its own function and disabled lint only for that function like this. @TargetApi(Build.VERSION_CODES.JELLY_BEAN) @SuppressWarnings("deprecation") private static void setBg(Relati...
“Submit is not a function” error in JavaScript
... Adding submitAction as a handler for onsubmit and then invoking submit from it may create an infinite loop. The handler should be associated with onclick of the button.
– tvanfosson
May 7 '09 at 5:54
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How can I save my secret keys and password securely in my version control system?
...emote repository, the files will be transparently encrypted. When you pull from a local machine which has the .gitencrypt directory (containing your passphrase), the files will be transparently decrypted.
Notes
I should note that this tutorial does not describe a way to only encrypt your sensitive...
C compiler for Windows? [closed]
...iler but would like a Windows solution. Any ideas? I've looked at Dev-C++ from Bloodshed but looking for more options.
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