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MySQL CONCAT returns NULL if any field contain NULL
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288
convert the NULL values with empty string by wrapping it in COALESCE
SELECT CONCAT(COALESCE(`...
What is the AppDelegate for and how do I know when to use it?
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256
I normally avoid the design approach implied by Andrew's use of the term "heart of your applic...
How do you use window.postMessage across domains?
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Here is an example that works on Chrome 5.0.375.125.
The page B (iframe content):
<html>
<head></head>
<body>
<script>
top.postMessage('hello', 'A');
</script>
</body>
</html>
Note t...
How do I get cURL to not show the progress bar?
...m, you could always redirect stderr to /dev/null:
curl http://google.com 2>/dev/null > temp.html
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android: move a view on touch move (ACTION_MOVE)
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238
Something like this:
public class MyActivity extends Activity implements View.OnTouchListener...
How can I find the version of the Fedora I use?
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vdegenne
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answered Feb 12 '09 at 9:31
David GrantDavid Gr...
How to edit multi-gigabyte text files? Vim doesn't work =( [closed]
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72
If you are on *nix (and assuming you have to modify only parts of file (and rarely)), you may sp...
Using pg_dump to only get insert statements from one table within database
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232
if version < 8.4.0
pg_dump -D -t <table> <database>
Add -a before the -t...
Spring: Why do we autowire the interface and not the implemented class?
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