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GetHashCode Guidelines in C#
... is mostly, it is a valid guideline, but perhaps not a valid rule. It also doesn't tell the whole story.
The point being made is that for mutable types, you cannot base the hash code on the mutable data because two equal objects must return the same hash code and the hash code has to be valid for t...
Implementing IDisposable correctly
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This would be the correct implementation, although I don't see anything you need to dispose in the code you posted. You only need to implement IDisposable when:
You have unmanaged resources
You're holding on to references of things that are themselves disposable.
Nothing in...
Change Checkbox value without triggering onCheckChanged
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No, you can't do it. The onCheckedChanged method is called directly from setChecked. What you can do is the following:
mCheck.setOnCheckedChangeListener (null);
mCheck.setChecked (false);
mCheck.setOnCheckedChangeListener (mListener);
S...
How do I read / convert an InputStream into a String in Java?
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A nice way to do this is using Apache commons IOUtils to copy the InputStream into a StringWriter... something like
StringWriter writer = new StringWriter();
IOUtils.copy(inputStream, writer, encoding);
String theString = writer.toString(...
How do I get the name of the current executable in C#?
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System.AppDomain.CurrentDomain.FriendlyName
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Loading/Downloading image from URL on Swift
...k(with: url, completionHandler: completion).resume()
}
Create a method to download the image (start the task)
func downloadImage(from url: URL) {
print("Download Started")
getData(from: url) { data, response, error in
guard let data = data, error == nil else { return }
print...
node and Error: EMFILE, too many open files
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For when graceful-fs doesn't work... or you just want to understand where the leak is coming from. Follow this process.
(e.g. graceful-fs isn't gonna fix your wagon if your issue is with sockets.)
From My Blog Article: http://www.blakerobertson....
What is the difference between a URI, a URL and a URN?
...pends on the interpretation of the RFC. For example in Java the URI parser does not like [ or ] and that's because the spec says "should not" and not "shall not".
So that muddies the waters further, unfortunately.
If you haven't already read Roger Pate's answer, I'd advise doing so as well.
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Difference between variable declaration syntaxes in Javascript (including global variables)?
...ith ES2015)
const a = 0; // 1.2 (new with ES2015)
a = 0; // 2
window.a = 0; // 3
this.a = 0; // 4
Those statements explained
#1 var a = 0;
This creates a global variable which is also a property of the global object, which we access as window on browsers (or via this a global scope...
Converting from longitude\latitude to Cartesian coordinates
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I have recently done something similar to this using the
"Haversine Formula" on WGS-84 data, which is a derivative of the "Law of Haversines" with very satisfying results.
Yes, WGS-84 assumes the Earth is an ellipsoid, but I believe you ...