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Most efficient way to concatenate strings?
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For trivial string concatentation use what ever is most readable. string a = b + c + d; will almost always be faster than doing it with StringBuilder, but the difference is typically irrelevant. Use StringBuilder (or other option of your choice) when repeatedly adding to the same ...
Programmatically find the number of cores on a machine
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C++11
#include <thread>
//may return 0 when not able to detect
const auto processor_count = std::thread::hardware_concurrency();
Reference: std::thread::hardware_concurrency
In C++ prior to C++11, there's no portable way. Instead, yo...
C++ Object Instantiation
...nswer to mean I agree with it; I just didn't want the mistakes in it to be read.
– TamaMcGlinn
Sep 1 '18 at 19:43
@Tam...
Difference between an API and SDK
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I came across this question when I was trying to read and understand facebook documentation: developers.facebook.com/docs/javascript One thing confuses me is that facebook calls it a javascript SDK, which in my opinion is more like an API. Because it doesn't provide any tan...
Selecting the first “n” items with jQuery
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You probably want to read up on slice. Your code will look something like this:
$("a").slice(0,20)
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How to Correctly Use Lists in R?
Brief background: Many (most?) contemporary programming languages in widespread use have at least a handful of ADTs [abstract data types] in common, in particular,
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Open file in a relative location in Python
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This code works fine:
import os
def readFile(filename):
filehandle = open(filename)
print filehandle.read()
filehandle.close()
fileDir = os.path.dirname(os.path.realpath('__file__'))
print fileDir
#For accessing the file in the same folder
filen...
Are Mutexes needed in javascript?
...: Implementing Mutual Exclusion in JavaScript .
On the other hand, I have read that there are no threads in javascript, but what exactly does that mean?
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Is there an MD5 Fixed Point where md5(x) == x?
...ing backwards" if you don't treat the function as a black box, but instead read the spec and apply some mathematical thinking.
– rndmcnlly
May 23 '09 at 1:46
2
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Static nested class in Java, why?
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@DavidS Thanks for the link! Yeah, I was wrong, reading my comment now I see that my rephrase was incorrect. As you said: An inner class interacts with the instance members through an implicit reference to its enclosing class, and this points out another interesting proper...