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How to get duplicate items from a list using LINQ? [duplicate]
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Here is one way to do it:
List<String> duplicates = lst.GroupBy(x => x)
.Where(g => g.Count() > 1)
.Select(g => g.Key)
.ToList(...
Jackson with JSON: Unrecognized field, not marked as ignorable
... I'm serializing classes that I do not own (cannot modify). In one view, I'd like to serialize with a certain set of fields. In another view, I want a different set of fields serialized (or perhaps rename the properties in the JSON).
– Jon Lorusso
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List or IList [closed]
Can anyone explain to me why I would want to use IList over List in C#?
18 Answers
18
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CA2202, how to solve this case
...ied again that this code does not generate the warning, while the original one does.
In the original code, CryptoStream.Dispose() and MemoryStream().Dispose() are actually called twice (which may or may not be a problem).
The modified code works as follows: references are set to null, as soon as r...
UIView Infinite 360 degree rotation animation?
...ew 360 degrees, and have looked at several tutorials online. I could get none of them working, without the UIView either stopping, or jumping to a new position.
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What is the difference between XMLHttpRequest, jQuery.ajax, jQuery.post, jQuery.get
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Each one of them uses XMLHttpRequest. This is what the browser uses to make the request. jQuery is just a JavaScript library and the $.ajax method is used to make a XMLHttpRequest.
$.post and $.get are just shorthand versions of ...
Add Keypair to existing EC2 instance
...mote EC2 instance, however, seems distant and inaccessible when you are in one of these situations. Fortunately, AWS provides us with the power and flexibility to be able to recover a system like this, provided that we are running EBS boot instances and not instance-store.
The approach on EC2 is so...
Android: Difference between Parcelable and Serializable?
...eKey");
Parcelable
Parcelable process is much faster than Serializable. One of the reasons for this is that we are being explicit about the serialization process instead of using reflection to infer it. It also stands to reason that the code has been heavily optimized for this purpose.
Look at t...
What is the best way to stop people hacking the PHP-based highscore table of a Flash game
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Attackers control the runtime memory of the Flash interpreter, so that anyone who knows how to use a programmable debugger can alter any variable (including the current score) at any time, or alter the program itself.
The simplest possible attack against your system is to run the HTTP traffic for...
jQuery - prevent default, then continue default
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Use jQuery.one()
Attach a handler to an event for the elements. The handler is executed at most once per element per event type
$('form').one('submit', function(e) {
e.preventDefault();
// do your things ...
// and when y...