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Why is quicksort better than mergesort?
...t has O(n2) worst-case runtime and O(nlogn) average case runtime. However, it’s superior to merge sort in many scenarios because many factors influence an algorithm’s runtime, and, when taking them all together, quicksort wins out.
In particular, the often-quoted runtime of sorting algorithms r...
Understanding Canvas and Surface concepts
...s of drawing to SurfaceView and therefore the whole Surface / Canvas / Bitmap system, which is used in Android.
3 Answe...
Why should I use an IDE? [closed]
...gramming, and works in an environment where most/all of my colleagues use either vim or emacs for all of their work, what are the advantages of IDEs? Why should I use one?
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Should switch statements always contain a default clause?
In one of my first code reviews (a while back), I was told that it's good practice to include a default clause in all switch statements. I recently remembered this advice but can't remember what the justification was. It sounds fairly odd to me now.
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Why does Android use Java? [closed]
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Some points:
Java is a known language, developers know it and don't have to learn it
it's harder to shoot yourself with Java than with C/C++ code since it has no pointer arithmetic
it runs in a VM, so no need to recompile it for every phone out there and easy to secure
large numb...
How to export data as CSV format from SQL Server using sqlcmd?
I can quite easily dump data into a text file such as:
11 Answers
11
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Join vs. sub-query
...ed JOIN over sub-query. But nowadays everyone uses sub-query, and I hate it; I don't know why.
19 Answers
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Do I need to disable NSLog before release Application?
When releasing an app for iPhone, if I disable NSLog(); will it perform better?
12 Answers
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Why are dates calculated from January 1st, 1970?
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It is the standard of Unix time.
Unix time, or POSIX time, is a system for describing points in time, defined as the number of seconds elapsed since midnight proleptic Coordinated Universal Time (UTC) of January 1, 1970, ...
Use jQuery to hide a DIV when the user clicks outside of it
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Had the same problem, came up with this easy solution. It's even working recursive:
$(document).mouseup(function(e)
{
var container = $("YOUR CONTAINER SELECTOR");
// if the target of the click isn't the container nor a descendant of the contain...