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A cron job for rails: best practices?
...Listener.process_new_messages
puts "done."
end
To execute from the command line, this is just "rake cron". This command can then be put on the operating system cron/task scheduler as desired.
Update this is quite an old question and answer! Some new info:
the heroku cron service I referenced ...
Javascript - Track mouse position
... t mseconds. So essentially, when a page loads - this tracker should start and for (say) every 100 ms, I should get the new value of posX and posY and print it out in the form.
...
Truncate a list to a given number of elements
...t an out of bounds exception. Choose the minimum value of the desired size and the current size of the list as the ending index.
Lastly, note that the second argument should be one more than the last desired index.
share
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pretty-print JSON using JavaScript
...-to-read (for human readers) format? I'm looking primarily for indentation and whitespace, with perhaps even colors / font-styles / etc.
...
In MySQL queries, why use join instead of where?
...plicit is almost universally better.
Conclusion
Short of familiarity and/or comfort, I don't see any benefit to continuing to use the ANSI-89 WHERE clause instead of the ANSI-92 JOIN syntax. Some might complain that ANSI-92 syntax is more verbose, but that's what makes it explicit. The more e...
How can I make a div not larger than its contents?
...nter the parent of the table by setting "text-align:center" on it's parent and "text-align:left" on it (e.g. <body style="text-align:center"><span style="text-align:left; display:inline-block;"><table>...</table></span></body>)
– bernstein
...
How do I update the GUI from another thread?
...ET 2.0, here's a nice bit of code I wrote that does exactly what you want, and works for any property on a Control:
private delegate void SetControlPropertyThreadSafeDelegate(
Control control,
string propertyName,
object propertyValue);
public static void SetControlPropertyThreadSafe...
Remove a marker from a GoogleMap
In the new Google Maps API for Android, we can add a marker , but there is no way to (easily) remove one.
11 Answers
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Get underlying NSData from UIImage
... UIImageJPEGRepresentation or UIImagePNGRepresentation will alter the data and do a reconversion. Is there any way to really achieve what was asked for?
– Patrik
Mar 12 '13 at 18:19
...
Is passing 'this' in a method call accepted practice in java
...
There's no reason not to use it, this is the current instance and it's perfectly legitimate to use. In fact there's often no clean way to omit it.
So use it.
As it's hard to convince it's acceptable without example (a negative answer to such a question is always easier to argument), I...