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How to filter None's out of List[Option]?
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How to initialize all members of an array to the same value in Swift?
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How to run only one task in ansible playbook?
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You should use tags: as documented in http://docs.ansible.com/playbooks_tags.html
If you have a large playbook it may become useful to be able to run a specific part of the configuration without running the whole playbook.
Both plays and tasks support a “tags:” attribute for...
Group by & count function in sqlalchemy
I want a "group by and count" command in sqlalchemy. How can I do this?
3 Answers
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What is the meaning of git reset --hard origin/master?
...same as origin/master.
You probably wanted to ask this before you ran the command. The destructive nature is hinted at by using the same words as in "hard reset".
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Git pull without checkout?
I'm used to running git pull and other commands from within a branch I'm working on. But I have set up a development server that several people work on, so I don't want to have to switch branches when I do it. If I want to update an existing branch on the dev server from the github repository we a...
Why is the JVM stack-based and the Dalvik VM register-based?
... bytecode is defined in terms of an infinite register machine, and when it comes to efficiency, it seems to mostly be about memory-footprint.
– aioobe
Apr 27 '10 at 10:30
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Overload constructor for Scala's Case Classes?
...ew Foo(1)
However, you may like to also overload the apply method in the companion object, which is called when you omit new.
object Foo {
def apply(bar: Int) = new Foo(bar)
}
Foo(1, 2)
Foo(1)
In Scala 2.8, named and default parameters can often be used instead of overloading.
case class Ba...
JPanel Padding in Java
...extra padding arround the existing border: p.setBorder(BorderFactory.createCompoundBorder(new EmptyBorder(10, 10, 10, 10), new EtchedBorder()));
– Synox
Apr 22 '13 at 8:42
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