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Check whether variable is number or string in JavaScript
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If you're dealing with literal notation, and not constructors, you can use typeof:.
typeof "Hello World"; // string
typeof 123; // number
If you're creating numbers and strings via a constructor, such as var foo = new String("foo"), you should keep in m...
delete word after or around cursor in VIM
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What you should do is create an imap of a certain key to a series of commands, in this case the commands will drop you into normal mode, delete the current word and then put you back in insert:
:imap <C-d> <C-[>diwi
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How can I save application settings in a Windows Forms application?
... get persistable settings. Right click on the project in Solution Explorer and choose Properties. Select the Settings tab and click on the hyperlink if settings doesn't exist.
Use the Settings tab to create application settings. Visual Studio creates the files Settings.settings and Settings.Designe...
Difference between `set`, `setq`, and `setf` in Common Lisp?
What is the difference between "set", "setq", and "setf" in Common Lisp?
6 Answers
6
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SQL statement to select all rows from previous day
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WHERE YourDate >= dateadd(day,datediff(day,1,GETDATE()),0)
AND YourDate < dateadd(day,datediff(day,0,GETDATE()),0)
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How to extract the first two characters of a string in shell scripting?
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Probably the most efficient method, if you're using the bash shell (and you appear to be, based on your comments), is to use the sub-string variant of parameter expansion:
pax> long="USCAGol.blah.blah.blah"
pax> short="${long:0:2}" ; echo "${short}"
US
This will set short to be the f...
What is the fastest way to create a checksum for large files in C#
... is that SHA256Managed reads 4096 bytes at a time (inherit from FileStream and override Read(byte[], int, int) to see how much it reads from the filestream), which is too small a buffer for disk IO.
To speed things up (2 minutes for hashing 2 Gb file on my machine with SHA256, 1 minute for MD5) wra...
Remove all the children DOM elements in div
... @Eugene: Could you say more about that?
– Tom Anderson
Aug 28 '11 at 15:39
7
@Tom: dojox.g...
WPF OpenFileDialog with the MVVM pattern? [duplicate]
...hing like the MVVM Toolkit or similar thing (so I can get a base ViewModel and a RelayCommand).
Here's an example of an extremely simple interface for doing basic IO operations like OpenFileDialog and OpenFile. I'm showing them both here so you don't think I'm suggesting you create one interface w...
Why is spawning threads in Java EE container discouraged?
...aged because all resources within the environment are meant to be managed, and potentially monitored, by the server. Also, much of the context in which a thread is being used is typically attached to the thread of execution itself. If you simply start your own thread (which I believe some servers ...