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The smallest difference between 2 Angles
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a one line simple solution and solved for me(not the selected answer ;) ). but tan inverse is a costly process.
– Mohan Kumar
Jun 20 '16 at 16:32
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How do I determine k when using k-means clustering?
...core
range_n_clusters = [2, 3, 4] # clusters range you want to select
dataToFit = [[12,23],[112,46],[45,23]] # sample data
best_clusters = 0 # best cluster number which you will get
previous_silh_avg = 0.0
for n_clusters in range_n_clusters:
clusterer = KMeans...
Creating JSON on the fly with JObject
...item =
from p in posts
orderby p.Title
select new
{
title = p.Title,
description = p.Description,
link = p.Link,
category = p.Categories
}
}
});
Json.net documentation fo...
Real world use cases of bitwise operators [closed]
...ut a second time will undo the first. Older GUIs used to rely on this for selection highlighting and other overlays, in order to eliminate the need for costly redraws. They're still useful in slow graphics protocols (i.e. remote desktop).
Those were just the first few examples I came up with - t...
What's the bad magic number error?
...y mode to Programmer (Scientific in XP) to see Hex and Decimal conversion. Select "Hex" from Radio button. Enter values as second byte first and then the first byte i.e f303 Now click on "Dec" (Decimal) radio button. The value displayed is one which is correspond to the magic number aka version of p...
Android: Share plain text using intent (to all messaging apps)
...e of the chooser that the system will show
* to allow the user to select an app
*/
.setChooserTitle(yourChooserTitle)
.startChooser();
If you have any more questions about using ShareCompat, I highly recommend this great article from Ian Lake, an Android Developer...
Why does 'git commit' not save my changes?
..."message" - both do the same thing)
Alternatively, if you want to be more selective about what you add to the commit, you use the git add command to add the appropriate files to the staging area, and git status to preview what is about to be added (remembering to pay attention to the wording used)....
Java Look and Feel (L&F) [closed]
... (String) JOptionPane.showInputDialog(this, "Choose Look and Feel Here:", "Select Look and Feel", JOptionPane.QUESTION_MESSAGE, null, lookAndFeelsDisplay.toArray(), null);
if (changeLook != null) {
for (int i = 0; i < lookAndFeelsDisplay.size(); i++) {
if (cha...
UINavigationController “back button” custom text?
...
You can set the text in the Interface Builder:
Select the navigation item of the ViewController that the back button would return to:
In the utilities panel attribute inspector, enter your label for the Back Button:
I would prefer this approach over setting the titl...
How to detect a textbox's content has changed
...s of editing textbox content that do not involve any keypress. For example selecting a range of text then right-click-cut. Or dragging it. Or dropping text from another app into the textbox. Or changing a word via the browser's spell-check. Or...
So if you must detect every change, you have to poll...