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How to remove convexity defects in a Sudoku square?
...t: Solving a Sudoku from an input image using OpenCV (as in Google goggles etc). And I have completed the task, but at the end I found a little problem for which I came here.
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MyISAM versus InnoDB [closed]
...
People often talk about performance, reads vs. writes, foreign keys, etc. but there's one other must-have feature for a storage engine in my opinion: atomic updates.
Try this:
Issue an UPDATE against your MyISAM table that takes 5 seconds.
While the UPDATE is in progress, say 2.5 seconds i...
How to filter specific apps for ACTION_SEND intent (and set a different text for each app)
...roid.gm")) {
Intent intent = new Intent();
intent.setComponent(new ComponentName(packageName, ri.activityInfo.name));
intent.setAction(Intent.ACTION_SEND);
intent.setType("text/plain");
if(packageName.contains("twitter")) {
...
How does the Java 'for each' loop work?
...nges to the test-function (int[] to List<Integer>, length to size(), etc.):
[C:\java_code\]java TimeIteratorVsIndexIntegerList 1000000
Test A: 3,429,929,976 nanoseconds
Test B: 5,262,782,488 nanoseconds
A faster by 1,832,852,512 nanoseconds (34.326681820485675% faster)
[C:\java_code\]java Ti...
Why hasn't functional programming taken over yet?
... Mainstream languages keep getting more Smalltalk-like with C++, Java, C#, etc. Fashion and style change slower than anything, so when OO went mainstream, we got it by gluing parts of OO to old languages so it looked enough like C to swallow.
Functional is the same way. Haskell was a great functi...
Capture Image from Camera and Display in Activity
...dInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
this.imageView = (ImageView)this.findViewById(R.id.imageView1);
Button photoButton = (Button) this.findViewById(R.id.button1);
photoButton.setOnClickListener(new View.OnCl...
How and when to use ‘async’ and ‘await’
...iginal Request object which has things like language, IP address, headers, etc. If you switch threads halfway through processing something, you could potentially end up trying to pull information out of this object on a different HttpContext which could be disastrous. If you know you won't be using ...
How to check if a variable is a dictionary in Python?
...egin with ('god object's, overriding standard library/language constructs, etc.) The original question is itself an XY problem. Why does the OP need to check type? Because according to their code what they really want to do is to check whether an item in their collection behaves like a collection (i...
Java to Clojure rewrite
...ons, Declarative transactions/EJB, web layer (you mentioned JSP, servlets) etc. I have noticed the Clojure eco-system has various micro-frameworks and libraries with a goal to do one task, and do it well. I'd suggest evaluate libraries based on your need (and whether it would scale in large projects...
Is Using .NET 4.0 Tuples in my C# Code a Poor Design Decision?
...hat case, rather than having to remember the significance of Item1, Item2, etc.
Anonymous classes in C# already provide a superb solution to the most common private use of tuples, and they give meaningful names to the items, so they are actually superior in that sense. The only problem is that they...