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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...
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.
...
DataTrigger where value is NOT null?
I know that I can make a setter that checks to see if a value is NULL and do something. Example:
12 Answers
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How do I read / convert an InputStream into a String in Java?
...
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(...
node and Error: EMFILE, too many open files
...
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....
Change Checkbox value without triggering onCheckChanged
...
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...
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...
How does the “final” keyword in Java work? (I can still modify an object.)
...owed to initialize a final variable. The compiler makes sure that you can do it only once.
Note that calling methods on an object stored in a final variable has nothing to do with the semantics of final. In other words: final is only about the reference itself, and not about the contents of the r...
Python - Create a list with initial capacity
...
def doAppend( size=10000 ):
result = []
for i in range(size):
message= "some unique object %d" % ( i, )
result.append(message)
return result
def doAllocate( size=10000 ):
result=size*[None]
fo...
How do I remove diacritics (accents) from a string in .NET?
...
I've not used this method, but Michael Kaplan describes a method for doing so in his blog post (with a confusing title) that talks about stripping diacritics: Stripping is an interesting job (aka
On the meaning of meaningless, aka All
Mn characters are non-spacing, but
some are more non-spacin...