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Use LINQ to get items in one List, that are not in another List
...rs find more readable:
var result = peopleList2.Where(p => peopleList1.All(p2 => p2.ID != p.ID));
Warning: As noted in the comments, these approaches mandate an O(n*m) operation. That may be fine, but could introduce performance issues, and especially if the data set is quite large. If t...
Angular JS: What is the need of the directive’s link function when we already had directive’s contro
... is what happens,
$compile walks through the whole template and collects all the directives that it recognizes.
All the directives that are discovered are compiled recursively and their link functions are collected.
Then, all the link functions are wrapped in a new link function and returned as l....
Best lightweight web server (only static content) for Windows [closed]
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Have a look at mongoose:
single executable
very small memory footprint
allows multiple worker threads
easy to install as service
configurable with a configuration
file if required
share
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How to negate specific word in regex? [duplicate]
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This says it all (I probably would have started with (?!bar) and built up). I don't see why other people are making it so complicated.
– Beta
Aug 7 '09 at 14:49
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What are enums and why are they useful?
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You should always use enums when a variable (especially a method parameter) can only take one out of a small set of possible values. Examples would be things like type constants (contract status: "permanent", "temp", "apprentice"), or flags ("execute now", "defer execution")....
Detecting WPF Validation Errors
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This post was extremely helpful. Thanks to all who contributed. Here is a LINQ version that you will either love or hate.
private void CanExecute(object sender, CanExecuteRoutedEventArgs e)
{
e.CanExecute = IsValid(sender as DependencyObject);
}
private bool IsV...
How to recognize swipe in all 4 directions
...mask, but each recognizer can only handle one direction. You can send them all to the same handler if you want, and sort it out there, or send them to different handlers. Here's one implementation:
override func viewDidLoad() {
super.viewDidLoad()
let swipeRight = UISwipeGestureRecognizer(...
How to convert a string to lower case in Bash?
...ous ways:
POSIX standard
tr
$ echo "$a" | tr '[:upper:]' '[:lower:]'
hi all
AWK
$ echo "$a" | awk '{print tolower($0)}'
hi all
Non-POSIX
You may run into portability issues with the following examples:
Bash 4.0
$ echo "${a,,}"
hi all
sed
$ echo "$a" | sed -e 's/\(.*\)/\L\1/'
hi all
# t...
window.onload vs
...load is less obtrusive though - it takes your JavaScript out of the HTML.
All of the common JavaScript libraries, Prototype, ExtJS, Dojo, JQuery, YUI, etc. provide nice wrappers around events that occur as the document is loaded. You can listen for the window onLoad event, and react to that, but on...
parseInt(null, 24) === 23… wait, what?
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@Ignacio. Actually, I was wrong. I didn't realize 37 was referring to a radix. Sorry about that.
– Mike Samuel
Jun 23 '11 at 20:15
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