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Does use of final keyword in Java improve the performance?
...iable x.
This prooves that final variables have impact on performances, at least for this simple case.
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Indenting #defines
...aining no new-line characters) or that
follows white space containing at least one new-line character, and is ended by the next
new-line character.
The only possible dispute is the parenthetical expression '(at the start of translation phase 4)', which could mean that the comments before the h...
Mapping two integers to one, in a unique and deterministic way
...ible, so by the obvious Pigeonhole Principle, we need an output of size at least 2^16 * (2^16 -1), which is equal to 2^32 - 2^16, or in other words, a map of 32 bit numbers should be feasible ideally. This may not be of little practical importance in programming world.
Cantor pairing function:
(a...
What REALLY happens when you don't free after malloc?
...
Yes you are right, your example doesn't do any harm (at least not on most modern operating systems). All the memory allocated by your process will be recovered by the operating system once the process exits.
Source: Allocation and GC Myths (PostScript alert!)
Allocation Myth...
application/x-www-form-urlencoded or multipart/form-data?
...
READ AT LEAST THE FIRST PARA HERE!
I know this is 3 years too late, but Matt's (accepted) answer is incomplete and will eventually get you into trouble. The key here is that, if you choose to use multipart/form-data, the boundary mu...
What's the pythonic way to use getters and setters?
...utes.
This is what is expected by users of Python. Following the rule of least-surprise, you should try to give your users what they expect unless you have a very compelling reason to the contrary.
Demonstration
For example, say we needed our object's protected attribute to be an integer between...
Can hash tables really be O(1)?
...e number of items in the hash.
The O(1) lookup performance claim makes at least two assumptions:
Your objects can be equality compared in O(1) time.
There will be few hash collisions.
If your objects are variable size and an equality check requires looking at all bits then performance will beco...
Create Generic method constraining T to an Enum
...on methods are like a virus that infects all your objects. IConvertable at least narrows it down quite a bit.
– russbishop
Mar 5 '14 at 18:04
3
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Is pass-by-value a reasonable default in C++11?
...e best precondition for an optimizer to create fastest code - in theory at least and if not in reality then in a few years reality.
Performance considerations are very often overrated in the context of parameter passing. Perfect forwarding is an example. Functions like emplace_back are mostly very ...
Rename specific column(s) in pandas
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There are at least five different ways to rename specific columns in pandas, and I have listed them below along with links to the original answers. I also timed these methods and found them to perform about the same (though YMMV depending...