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Why do variable names often start with the letter 'm'? [duplicate]
...he Android tutorials such as the Notepad tutorial , I noticed that almost all variables are named starting with the letter 'm'. What convention is this, and where does it originate from?
...
Get the POST request body from HttpServletRequest
... that we cannot read the request body again as getReader has already been called.
– Nikhil Sahu
Jan 6 '17 at 16:08
1
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Is there a way to select sibling nodes?
...lways is inspiring. I dug further. This is how jQuery gets siblings essentially:
function getChildren(n, skipMe){
var r = [];
for ( ; n; n = n.nextSibling )
if ( n.nodeType == 1 && n != skipMe)
r.push( n );
return r;
};
function getSiblings(n) {
r...
How to remove files from git staging area?
... which I think added too many files to the staging area. How can I delete all the files from the staging area?
14 Answers
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Building big, immutable objects without using constructors having long parameter lists
...of course completely wrong.
The trick is that only the build() method actually creates a Foo (hence you Foo can be immutable).
FooFactory.create(), whereXXX(..) and withXXX(..) all create "something else".
That something else may be a FooFactory, here's one way to do it....
You FooFactory would ...
Debug.Assert vs Exception Throwing
...ated unexpectedly, it makes sense to halt execution by throwing -- I personally would not use exceptions in the place of assertions. Here's why:
As others have said, assertions should document situations that are impossible, in such a manner that if the allegedly impossible situation comes to pass,...
Setting background-image using jQuery CSS property
...rnatively to what the others are correctly suggesting, I find it easier usually to toggle CSS classes, instead of individual CSS settings (especially background image URLs). For example:
// in CSS
.bg1
{
background-image: url(/some/image/url/here.jpg);
}
.bg2
{
background-image: url(/anot...
Beginner's guide to ElasticSearch [closed]
...irst principals in context of Elasticsearch. While the reference docs are all about finding the precise parameter you need, the Guide is a narrative that discusses problems in search and how to solve them.
Best of all, the book is OSS and free (unless you want to buy a paper copy, in which case O'...
Access POST values in Symfony2 request object
... without a class, and get back an array of the submitted
data. This is actually really easy:
public function contactAction(Request $request) {
$defaultData = array('message' => 'Type your message here');
$form = $this->createFormBuilder($defaultData)
->add('name', 'text')
->add('...
Ternary operation in CoffeeScript
...placement for what is supposed to be a concise expression. And ?: is after all a very ingrained standard among many languages, JavaScript among them. Notwithstanding all that, it seems to be set in stone at this stage.]
– mahemoff
Nov 15 '14 at 3:16
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