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Functional programming - is immutability expensive? [closed]
...sing primitives, which may have to be boxed/unboxed. You're not trying to test the overhead of wrapping primitive objects, you're trying to test immutability.
You've chosen an algorithm where in-place operation is unusually effective (and provably so). If you want to show that there exist algorith...
Should I implement __ne__ in terms of __eq__ in Python?
... right1
assert right1 != right2
assert right2 != right1
These instances, testing under Python 3, also work correctly:
assert not right_py3_1 == right_py3_2
assert not right_py3_2 == right_py3_1
assert right_py3_1 != right_py3_2
assert right_py3_2 != right_py3_1
And recall that these have __ne__...
git stash blunder: git stash pop and ended up with merge conflicts
...f proposed changes
git stash -k ;# (2) get rid of everything else
make test ;# (3) make sure proposal is reasonable
git stash apply ;# (4) restore original working tree
If you "git commit" between steps (3) and (4), then this
just works. However, if these steps are part of a pre-c...
Watermark / hint text / placeholder TextBox
...System.Globalization.CultureInfo culture )
{
// Always test MultiValueConverter inputs for non-null
// (to avoid crash bugs for views in the designer)
if (values[0] is bool && values[1] is bool)
{
bool hasText = !(bool)v...
What is the meaning of the term arena in relation to memory?
...dvantage over custom-writing your own, namely that you don't have to write/test/debug/maintain etc. Even if you're certain with no evidence that you can improve performance by managing your own allocation, you still need good evidence before deciding that this improvement is worth the tradeoff.
...
Graph Algorithm To Find All Connections Between Two Arbitrary Vertices
...raph in parallel, should you for some reason wish to do that.
Here's some test code demonstrating how the function given above works:
# test graph:
# ,---B---.
# A | D
# `---C---'
graph = {
"A": ("B", "C"),
"B": ("A", "C", "D"),
"C": ("A", "B", "D"),
"D": ("B", "C")...
Natural Sort Order in C#
...
+1 Not only is it the most concise it is the fastest I have seen. except for the accepted answer but I cannot use that one because of machine dependencies. It sorted over 4 million values in about 35 seconds.
– Gene S
Oct 4 '12 at 2...
How do exceptions work (behind the scenes) in c++
... an error is rare, it can be faster, since you do not have the overhead of testing for errors anymore.
In case you want more information, in particular what all the __cxa_ functions do, see the original specification they came from:
Itanium C++ ABI
...
How do Trigonometric functions work?
...uncated to the ±1 domain because any value outside it is meaningless.
To test the approximating functions, a billion random function evaluations were forced to be evaluated (that is, the -O3 optimizing compiler was not allowed to bypass evaluating something because some computed result would not b...
When should one use a spinlock instead of mutex?
...e it a try and compare the results (e.g. using a profiler), but be sure to test both cases, a single-core and a multi-core system before you jump to conclusions (and possibly different operating systems, if your code will be cross-platform).
Update: A Warning for iOS
Actually not iOS specific but ...