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Running a cron every 30 seconds
...ed to find another way.
One possibility, though it's a bit of a kludge(a), is to have two jobs, one offset by 30 seconds:
# Need these to run on 30-sec boundaries, keep commands in sync.
* * * * * /path/to/executable param1 param2
* * * * * ( sleep 30 ; /path/to/executable param1 param2...
How to parse JSON in Scala using standard Scala classes?
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This is a solution based on extractors which will do the class cast:
class CC[T] { def unapply(a:Any):Option[T] = Some(a.asInstanceOf[T]) }
object M extends CC[Map[String, Any]]
object L extends CC[List[Any]]
object S extends...
registerForRemoteNotificationTypes: is not supported in iOS 8.0 and later
When trying to register for push notifications under iOS 8.x:
15 Answers
15
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Why shouldn't `'` be used to escape single quotes?
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" is on the official list of valid HTML 4 entities, but ' is not.
From C.16. The Named Character Reference ':
The named character reference '
(the apostrophe, U+0027) was
introduced in XML 1.0 but doe...
Calculating arithmetic mean (one type of average) in Python
Is there a built-in or standard library method in Python to calculate the arithmetic mean (one type of average) of a list of numbers?
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What is the point of a private pure virtual function?
...The question in the topic suggest a pretty common confusion. The confusion is common enough, that C++ FAQ advocated against using private virtuals, for a long time, because confusion seemed to be a bad thing.
So to get rid of the confusion first: Yes, private virtual functions can be overridden in ...
Creating an abstract class in Objective-C
... an abstract class, but that doesn't appear to be possible in Objective-C. Is this possible?
21 Answers
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What does the keyword Set actually do in VBA?
Hopefully an easy question, but I'd quite like a technical answer to this!
7 Answers
7...
What's better at freeing memory with PHP: unset() or $var = null
I realise the second one avoids the overhead of a function call ( update , is actually a language construct), but it would be interesting to know if one is better than the other. I have been using unset() for most of my coding, but I've recently looked through a few respectable classes found off t...
Passing current scope to an AngularJS Service
Is it correct to pass the "current" $scope to an AngularJS service?
4 Answers
4
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