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What's an easy way to read random line from a file in Unix command line?
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You can use shuf:
shuf -n 1 $FILE
There is also a utility called rl. In Debian it's in the randomize-lines package that does exactly what you want, though not available in all distros. On its home page it actually recommends the use of shuf instead (which didn't e...
Is it better to use Enumerable.Empty() as opposed to new List() to initialize an IEnumerable
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I think most postings missed the main point. Even if you use empty array or empty list, those are objects and they are stored in memory. Than Garbage Collector has to take care of them. If you are dealing with high throughput application, it could ...
When to use DataContract and DataMember attributes?
...confused about the DataContract attribute in WCF. As per my knowledge it is used for serializating user defined type like classes. I wrote one class which is exposed at client side like this.
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Avoiding “resource is out of sync with the filesystem”
I develop Java code with Eclipse and regularly get this message:
10 Answers
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jQuery get value of selected radio button
The problem statement is simple. I need to see if user has selected a radio button from a radio group. Every radio button in the group share same id.
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How to set enum to null
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edited Mar 11 '15 at 14:45
MikeTheLiar
3,97299 gol...
Can the Unix list command 'ls' output numerical chmod permissions?
Is it possible when listing a directory to view numerical unix permissions such as 644 rather than the symbolic output -rw-rw-r--
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Is a Python list guaranteed to have its elements stay in the order they are inserted in?
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Yes, the order of elements in a python list is persistent.
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Unicode characters in URLs
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Use percent encoding. Modern browsers will take care of display & paste issues and make it human-readable. E. g. http://ko.wikipedia.org/wiki/위키백과:대문
Edit: when you copy such an url in Firefox, the clipboard will hold the percent-encoded form (which is usually a go...
How do I size a UITextView to its content?
Is there a good way to adjust the size of a UITextView to conform to its content? Say for instance I have a UITextView that contains one line of text:
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