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How do negative margins in CSS work and why is (margin-top:-5 != margin-bottom:5)?
A common trick for vertical positioning elements is to use the following CSS:
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Android preferences onclick event
In my preferences.xml I have a preference element like this:
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Format a date using the new date time API
I was playing with the new date time API but when running this:
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Determining 32 vs 64 bit in C++
...ably determine whether C++ code is being compiled in 32 vs 64 bit. We've come up with what we think is a reasonable solution using macros, but was curious to know if people could think of cases where this might fail or if there is a better way to do this. Please note we are trying to do this in a cr...
Running a specific test case in Django when your app has a tests directory
The Django documentation ( http://docs.djangoproject.com/en/1.3/topics/testing/#running-tests ) says that you can run individual test cases by specifying them:
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Time complexity of Sieve of Eratosthenes algorithm
...-bound is n(1/2 + 1/3 + 1/5 + 1/7 + …), that is sum of reciprocals of primes up to n, which is O(n log log n). (See here or here.)
The "find the next prime number" bit is only O(n) overall, amortized — you will move ahead to find the next number only n times in total, not per step. So this whol...
Creating functions in a loop
...urn i
Default values (the right-hand i in i=i is a default value for argument name i, which is the left-hand i in i=i) are looked up at def time, not at call time, so essentially they're a way to specifically looking for early binding.
If you're worried about f getting an extra argument (and thus...
How to move columns in a MySQL table?
Currently I am having the following MySQL table: Employees (empID, empName, department);
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Task not serializable: java.io.NotSerializableException when calling function outside closure only o
...terface, so this is not what's causing your task to fail. Now this doesn't mean that you can serialise an RDD with Spark and avoid NotSerializableException
Spark is a distributed computing engine and its main abstraction is a resilient distributed dataset (RDD), which can be viewed as a distributed...
Reading a binary file with python
... find particularly difficult reading binary file with Python. Can you give me a hand?
I need to read this file, which in Fortran 90 is easily read by
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