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What are the big improvements between guava and apache equivalent libraries?
...he code is full of best practices and useful patterns to make the API more readable, discoverable, performant, secure, thread-safe...
Having read Effective Java (awesome book BTW), I see these patterns everywhere in the code:
factory methods (such as ImmutableList.copyOf())
builder pattern (Immut...
Explanation of strong and weak storage in iOS5
... understanding the difference between strong and weak storage. I have read the documentation and other SO questions, but they all sound identical to me with no further insight.
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How to check whether a pandas DataFrame is empty?
... on the previous examples, in which the index is 0 and empty is True. When reading the length of the columns index for the first loaded dataframe df1, it returns 0 columns to prove that it is indeed empty.
In [8]: len(df1.columns)
Out[8]: 0
In [9]: len(df2.columns)
Out[9]: 2
Critically, while the ...
How does the “this” keyword work?
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I recommend reading Mike West's article Scope in JavaScript (mirror) first. It is an excellent, friendly introduction to the concepts of this and scope chains in JavaScript.
Once you start getting used to this, the rules are actually pre...
How can I declare and use Boolean variables in a shell script?
... [ ] or [[ ]], and also on whether or not the operands are quoted. You can read more about that in Advanced Bash Scripting Guide: 7.3 Other Comparison Operators (scroll down to the discussion of = and ==).
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What is the difference between a URI, a URL and a URN?
...t".
So that muddies the waters further, unfortunately.
If you haven't already read Roger Pate's answer, I'd advise doing so as well.
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How do CUDA blocks/warps/threads map onto CUDA cores?
...a few weeks, but I have some doubts about the allocation of blocks/warps/thread.
I am studying the architecture from a didactic point of view (university project), so reaching peak performance is not my concern.
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Private virtual method in C++
...ior from violating that trust (e.g. labeled 'clueless' by not bothering to read your documentation) have only themselves to blame.
Update: I've had some feedback that claims you can "chain" virtual function implementations this way using private virtual functions. If so, I'd sure like to see it.
T...
Python Infinity - Any caveats?
...result in inf or NaN, I just wanted to make it clear to others that may be reading through the comments, that 1/float('infinity')==0.0 is true; for, as you are approaching infinity, the result of the division approaches 0. I know it's just basic calculus, but I wanted to be sure those reading under...
How do malloc() and free() work?
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OK some answers about malloc were already posted.
The more interesting part is how free works (and in this direction, malloc too can be understood better).
In many malloc/free implementations, free does normally not return the memory to the operating system (...