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List of special characters for SQL LIKE clause
...KE '_ean' finds all four-letter first names that end with ean (Dean, Sean, and so on).
[ ] Any single character within the specified range ([a-f]) or set ([abcdef]).
WHERE au_lname LIKE '[C-P]arsen' finds author last names ending with arsen and starting with any single character between C and P, fo...
In a Bash script, how can I exit the entire script if a certain condition occurs?
...oniLeigh If it's closing the "window" likely you're putting the exit # command inside a function, not a script. (In which case use return # instead.)
– Jamie
Jan 6 at 20:27
a...
How to prevent ajax requests to follow redirects using jQuery
...r question interesting, but the problem in whole seems me more a misunderstanding. At least I'll try to explain my understanding of the problem.
The silent (transparent) redirection is the part of XMLHttpRequest specification (see here especially the words "... transparently follow the redirect ......
Converting a Uniform Distribution to a Normal Distribution
How can I convert a uniform distribution (as most random number generators produce, e.g. between 0.0 and 1.0) into a normal distribution? What if I want a mean and standard deviation of my choosing?
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How to have Emacs auto-refresh all buffers when files have changed on disk?
I have a non-emacs global search and replace function that causes my disk files to become more up-to-date than my emacs buffers (en masse). Is there any way to tell emacs to refresh all the buffers from disk in one fell swoop, instead of having to do each one individually by reloading the file?
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Ruby Arrays: select(), collect(), and map()
..., but a Hash. You can also use select here, but the block is given the key and value in this case:
irb(main):001:0> h = {:sku=>"507772-B21", :desc=>"HP 1TB 3G SATA 7.2K RPM LFF (3 .", :qty=>"", :qty2=>"1", :price=>"5,204.34 P"}
irb(main):002:0> h.select { |key, value| !value.em...
How does Trello access the user's clipboard?
When you hover over a card in Trello and press Ctrl + C , the URL of this card is copied to the clipboard. How do they do this?
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SQL Server: Examples of PIVOTing String data
... @Silmaril89 assume that 2nd column name in question is 'data' and 1st column is 'Action'
– Iman
Aug 30 '12 at 18:20
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Why can't a text column have a default value in MySQL?
If you try to create a TEXT column on a table, and give it a default value in MySQL, you get an error (on Windows at least). I cannot see any reason why a text column should not have a default value. No explanation is given by the MySQL documentation. It seems illogical to me (and somewhat frustrati...
How can I update NodeJS and NPM to the next versions?
I just installed Node.js and npm (for additional modules).
47 Answers
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