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Utility classes are evil? [closed]
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Grouping as methods may be canonic from an OOP standpoint. However, OOP is rarely the solution (among the exceptions are high-level architecture and widget toolkits as one of the instances where the incredibly broken semantics of code reuse by inheritance actu...
What is the most appropriate way to store user settings in Android application
...pplication's SharedPreferences are sandboxed to prevent other applications from being able to access the values so there's some security there, but physical access to a phone could potentially allow access to the values.
If possible I'd consider modifying the server to use a negotiated token for pr...
How Do I Choose Between a Hash Table and a Trie (Prefix Tree)?
...he discriminating factors that would lead me to choose one over the other. From my own naive point of view it seems as though using a trie has some extra overhead since it isn't stored as an array but that in terms of run time (assuming the longest key is the longest english word) it can be essentia...
How to run multiple Python versions on Windows
...the correct executable. You mention that you've started a python instance, from the command line, by simply typing python.
What this does under Windows, is to trawl the %PATH% environment variable, checking for an executable, either batch file (.bat), command file (.cmd) or some other executable t...
Where is C not a subset of C++? [closed]
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@Imagist: I usually hear the opposite from C programmers. They consider it poor style to add the cast, as it may conceal bugs. Good C code does not use the cast.
– jalf
Jul 29 '09 at 17:21
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SLF4J: Class path contains multiple SLF4J bindings
...sion (slf4j-log4j12) applicable for all? or should we find out the version from mvn dependency:tree?
– Lei Yang
Nov 11 '19 at 7:07
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C++ new int[0] — will it allocate memory?
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From 5.3.4/7
When the value of the expression in a direct-new-declarator is zero, the allocation function is called to allocate an array with no elements.
From 3.7.3.1/2
The effect of dereferencing a pointer returne...
void in C# generics?
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(Joke) And he can still return void from those would-be-void methods, with return System.Runtime.Serialization.FormatterServices.GetUninitializedObject(typeof(void));. It will be a boxed void, though.
– Jeppe Stig Nielsen
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Should you always favor xrange() over range()?
... dang well and is just as fast as xrange for when it counts (iterations).
from __future__ import division
def read_xrange(xrange_object):
# returns the xrange object's start, stop, and step
start = xrange_object[0]
if len(xrange_object) > 1:
step = xrange_object[1] - xrange_o...
How can I wait for set of asynchronous callback functions?
.... Let's say you have 10 ajax calls and you want to accumulate the results from those 10 ajax calls and then when they have all completed you want to do something. You can do it like this by accumulating the data in an array and keeping track of when the last one has finished:
Manual Counter
var ...