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javascript check for not null
...lsey". The double-not operator !! will remove more than just null. It will convert NaN and undefined into false as well. And that's why your array filters correctly when using the double not-operator !!.
– tfmontague
Aug 6 '16 at 20:50
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Implementing IDisposable correctly
...posted needs to be disposed.
public class User : IDisposable
{
public int id { get; protected set; }
public string name { get; protected set; }
public string pass { get; protected set; }
public User(int userID)
{
id = userID;
}
public User(string Username, strin...
Identifying and removing null characters in UNIX
...icates that the file is encoded in UTF-16 and that you should use iconv to convert it to UTF-8.
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How to disable scrolling in UITableView table when the content fits on the screen
... I always upvote such a̶n̶s̶w̶e̶r̶s̶ "rewrites" because converting to modern syntax requires time.
– Dmitry Isaev
Oct 2 '17 at 8:28
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Update Row if it Exists Else Insert Logic with Entity Framework
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This answer LOOKS awesome, but I'm running into this issue on update: An object with the same key already exists in the ObjectStateManager. The ObjectStateManager cannot track multiple objects with the same key.
– John Zumbrum
No...
PowerMockito mock single static method and return object
...doc:
Creates class mock with a specified strategy for its answers to
interactions. It's quite advanced feature and typically you don't need
it to write decent tests. However it can be helpful when working with
legacy systems. It is the default answer so it will be used only when
you don'...
Is recursion a feature in and of itself?
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To answer your specific question: No, from the standpoint of learning a language, recursion isn't a feature. If your professor really docked you marks for using a "feature" he hadn't taught yet, that was wrong.
Reading between the lines, one possibility is that by using recurs...
Why is 'this' a pointer and not a reference?
...lving, in early releases with real users, there were no references, only pointers. References were added when operator overloading was added, as it requires references to work consistently.
One of the uses of this is for an object to get a pointer to itself. If it was a reference, we'd have to writ...
How to create an array for JSON using PHP?
...est way that you should go every time for creating json in php is to first convert values in ASSOCIATIVE array.
After that just simply encode using json_encode($associativeArray). I think it is the best way to create json in php because whenever we are fetching result form sql query in php most of ...
Get index of selected option with jQuery
... @Joan.bdm jquery does not have selectedIndex property. Adding [0] converts the jquery object to a javascript object which has the selectedIndex property. This example won't work without [0]
– Aram
May 21 '14 at 23:28
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