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What does the `#` operator mean in Scala?
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To explain it, we first have to explain nested classes in Scala. Consider this simple example:
class A {
class B
def f(b: B) = println("Got my B!")
}
Now let's try something with it:
scala> val a1 = new A
a1: A = A@2fa8ecf4
scala&...
How do you Force Garbage Collection from the Shell?
... java.lang:type=Memory
#bean is set to java.lang:type=Memory
$>run gc
#calling operation gc of mbean java.lang:type=Memory
#operation returns:
null
$>quit
#bye
Look at the docs on the jmxterm web site for information about embedding this in bash/perl/ruby/other scripts. I've used popen2 in ...
How to uncompress a tar.gz in another directory
...specific directory, you can simply cd into your target directory prior to calling tar; then you will have to give a complete path to your archive, of course. You can do this in a scoping subshell to avoid influencing the surrounding script:
mkdir foo
(cd foo; tar -xzf ../bar.tar.gz) # instead of ...
How to debug a GLSL shader?
...ermediate result.
Is it possible to make some debug traces (like with printf) with GLSL ?
11 Answers
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How can I return the current action in an ASP.NET MVC view?
... the advice to add semantic information to the model is a better method in all cases than to rely on route data (controller, action) in your view even if the other answer provides more detail on how to get that data.
– tvanfosson
Apr 28 '16 at 12:34
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How do I update a GitHub forked repository?
...he URLs of repositories - origin is one, for example.) Then you can fetch all the branches from that upstream repository, and rebase your work to continue working on the upstream version. In terms of commands that might look like:
# Add the remote, call it "upstream":
git remote add upstream htt...
How do I raise the same Exception with a custom message in Python?
...ssign a special meaning to the elements of this tuple, while others are usually called only with a single string giving an error message.". So the code won't work arg[0] is not an error message (it could be an int, or it could be a string representing a file name).
– Trent
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Make sure that the controller has a parameterless public constructor error
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What's happening is that you're bitten by this problem. Basically, what happened is that you didn't register your controllers explicitly in your container. Unity tries to resolve unregistered concrete types for you, but because it can't resolve it (caused by an error in your configurat...
Best practices for styling HTML emails [closed]
...nd do not use a <style> tag (GMail, for example, strips that tag and all it's contents).
Against your better judgement, use and abuse tables. <div>s just won't cut it (especially in Outlook).
Don't use background images, they're spotty and will annoy you.
Remember that some email client...
Forward an invocation of a variadic function in C
... - is there a solution how to fix it? (MSVC prints: too few arguments for call)
– mvorisek
Jul 20 at 17:28
@mvorisek: ...