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Target elements with multiple classes, within one rule
...ould have elements with multiple classes, and I need to assign them within one rule, so that the same classes could be different within different containers. Say I have this in my CSS:
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How can I convert immutable.Map to mutable.Map in Scala?
...ritten to take advantage of this:
val m = collection.immutable.Map(1->"one",2->"Two")
val n = collection.mutable.Map(m.toSeq: _*)
This works because a Map can also be viewed as a sequence of Pairs.
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What's the best practice for primary keys in tables?
When designing tables, I've developed a habit of having one column that is unique and that I make the primary key. This is achieved in three ways depending on requirements:
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How to recognize swipe in all 4 directions
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You need to have one UISwipeGestureRecognizer for each direction. It's a little weird because the UISwipeGestureRecognizer.direction property is an options-style bit mask, but each recognizer can only handle one direction. You can send them a...
Replace one substring for another string in shell script
... @Priyatham51: There's no built-in feature for that. Just replace one, then the other.
– ruakh
Jan 9 '14 at 0:05
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Entity Framework vs LINQ to SQL
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This answer is obsolete. Now Linq to SQL supports one2many mapping
– George Lanetz
Dec 29 '15 at 13:18
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Hibernate openSession() vs getCurrentSession()
...nSession() always opens a new session that you have to close once you are done with the operations. SessionFactory.getCurrentSession() returns a session bound to a context - you don't need to close this.
If you are using Spring or EJBs to manage transactions you can configure them to open / close s...
How do I list one filename per output line in Linux?
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Use the -1 option (note this is a "one" digit, not a lowercase letter "L"), like this:
ls -1a
First, though, make sure your ls supports -1. GNU coreutils (installed on standard Linux systems) and Solaris do; but if in doubt, use man ls or ls --help or ch...
In bash, how does one clear the current input?
...rom the cursor to the end of the line. (It is sometimes useful to use only one of them.)
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Calculating arithmetic mean (one type of average) in Python
...-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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