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Not equal != operator on NULL
...dicates for such situations.
This behavior is not specific to SQL Server. All standards-compliant SQL dialects work the same way.
Note: To compare if your value is not null, you use IS NOT NULL, while to compare with not null value, you use <> 'YOUR_VALUE'. I can't say if my value equals or ...
Get list of passed arguments in Windows batch script (.bat)
...ke to find a Windows batch counterpart to Bash's $@ that holds a list of all arguments passed into a script.
14 Answers
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What's onCreate(Bundle savedInstanceState)
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If you save the state of the application in a bundle (typically non-persistent, dynamic data in onSaveInstanceState), it can be passed back to onCreate if the activity needs to be recreated (e.g., orientation change) so that you don't lose this prior information. If no data was suppl...
How to read multiple text files into a single RDD?
... RDD. The API here is just an exposure of Hadoop's FileInputFormat API, so all the same Path options apply.
– Nick Chammas
Jun 4 '14 at 15:04
7
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Prototypical inheritance - writing up [duplicate]
...bob and ben
The member walk is part of Person.prototype and is shared for all instances bob and ben are instances of Person so they share the walk member (bob.walk===ben.walk).
bob.walk();ben.walk();
Because walk() could not be found on bob directly JavaScript will look for it in the Person.prot...
Setting DIV width and height in JavaScript
I have a div with id="div_register" . I want to set its width dynamically in JavaScript.
6 Answers
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MAC addresses in JavaScript
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I concur with all the previous answers that it would be a privacy/security vulnerability if you would be able to do this directly from Javascript. There are two things I can think of:
Using Java (with a signed applet)
Using signed Javasc...
Avoiding memory leaks with Scalaz 7 zipWithIndex/group enumeratees
...ess1.chunk(4)
pipe process1.fold(0L) {
(c, vs) => c + vs.map(_._1.length.toLong).sum
}).runLast.run
This should work with any value for the n parameter (provided you're willing to wait long enough) -- I tested with 2^14 32MiB arrays (i.e., a total of half a TiB of memory allocated ...
Regular expression \p{L} and \p{N}
...This syntax is specific for modern Unicode regex implementation, which not all interpreters recognize. You can safely replace \p{L} by {a-zA-Z} (ascii notation) or {\w} (perl/vim notation); and \p{N} by {0-9} (ascii) or {\d} (perl/vim). If you want to match all of them, just do: {a-zA-Z0-9}+ or {\w\...
When a 'blur' event occurs, how can I find out which element focus went *to*?
...s caused by tabbing through fields with the keyboard, and does not work at all in Chrome or Safari. The big problem with using activeElement (except in IE) is that it is not consistently updated until after the blur event has been processed, and may have no valid value at all during processing! This...