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Android Min SDK Version vs. Target SDK Version
...at splitting and using multiple APKs is worse in terms of code complexity. Now you've got to remember to comment in/out or merge through more branches in your source control before you can make each export. When at an Android conference last October, they said they introduced the multiple APK system...
Bash conditionals: how to “and” expressions? (if [ ! -z $VAR && -e $VAR ])
...$VAR is empty.
Your version does not work because it evaluates to [ -e ]. Now in this case, bash simply checks if the single argument (-e) is a non-empty string.
From the manpage:
test and [ evaluate conditional expressions using a set of rules based on the number of arguments. ...
1 argu...
Using generic std::function objects with member functions in one class
...ethingArgs(a, b);
}
(I don't have a C++11 capable compiler at hand right now, so I can't check this one.)
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Proper way to declare custom exceptions in modern Python?
...it needs
super(ValidationError, self).__init__(message)
# Now for your custom code...
self.errors = errors
That way you could pass dict of error messages to the second param, and get to it later with e.errors
Python 3 Update: In Python 3+, you can use this slightly more...
What is the easiest way to duplicate an activerecord record?
...initely DO NOT use clone. As other posters have mentioned the clone method now delegates to using Kernel#clone which will copy the id. Use ActiveRecord::Base#dup from now on
– bradgonesurfing
Aug 5 '11 at 13:57
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Finding three elements in an array whose sum is closest to a given number
...A 2 , ..., A n , including negatives and positives, and another integer S. Now we need to find three different integers in the array, whose sum is closest to the given integer S. If there exists more than one solution, any of them is ok.
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Why not be dependently typed?
...in this regard but that has not already made it into GHC. If anyone else knows more, I would be happy to be corrected.
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What is memoization and how can I use it in Python?
... return k * factorial(k - 1)
factorial = Memoize(factorial)
A feature known as "decorators" was added in Python 2.4 which allow you to now simply write the following to accomplish the same thing:
@Memoize
def factorial(k):
if k < 2: return 1
return k * factorial(k - 1)
The Python D...
Uninstall ReSharper 4.5
I have ReSharper 4.5 in Visual Studio 2008. Now I want to install ReSharper 5, but I can't do it before I uninstall ReSharper 4.5.
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Do while loop in SQL Server 2008
...INT @I;
SET @I+=1;
IF NOT (@I<=10) BREAK; -- WHILE @I<=10
END
Now, you could of course rewrite this particular example as a simple WHILE loop, since this is not such a good candidate for a DO / WHILE construct. The emphasis was on example brevity rather than applicability, since legitim...