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difference between variables inside and outside of __init__()
Is there any difference at all between these classes besides the name?
10 Answers
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What does “coalgebra” mean in the context of programming?
...coalgebras" several times in functional programming and PLT circles, especially when the discussion is about objects, comonads, lenses, and such. Googling this term gives pages that give mathematical description of these structures which is pretty much incomprehensible to me. Can anyone please expla...
Import Maven dependencies in IntelliJ IDEA
I have a small question about IntelliJ IDEA 11. I just imported a project from subversion - its a maven project. But I have a problem in maven library dependencies so that I can't include all maven dependencies automatically - IDEA shows dependency errors only when I open that class/ Thats what I ge...
Relationship between SciPy and NumPy
SciPy appears to provide most (but not all [1]) of NumPy's functions in its own namespace. In other words, if there's a function named numpy.foo , there's almost certainly a scipy.foo . Most of the time, the two appear to be exactly the same, oftentimes even pointing to the same function object.
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Painless way to install a new version of R?
...han Linux). Does anyone have a good trick for doing the upgrade, from installing the software to copying all the settings/packages over?
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What is the difference between “Flush Magento Cache” and “Flush Cache Storage” in magento's cache ma
...s everything but might affect other applications if they're using it.
Normally the location is var/cache/ in Magento's folder so is not shared after all. It is safe to use either button. Sometimes (rarely) entries are not clearly tagged or Magento loses track of them and only the second button has ...
Default behavior of “git push” without a branch specified
... line. Possible values are:
nothing: do not push anything
matching: push all matching branches
All branches having the same name in both ends are considered to be matching.
This used to be the default, but not since Git 2.0 (simple is the new default).
upstream: push the current branch to its up...
CAP theorem - Availability and Partition Tolerance
...een X and Y, so they can't sync updates. At this point you can either:
A) Allow the nodes to get out of sync (giving up consistency), or
B) Consider the cluster to be "down" (giving up availability)
All the combinations available are:
CA - data is consistent between all nodes - as long as all n...
How do I use $scope.$watch and $scope.$apply in AngularJS?
...cycle and $scope
First and foremost, AngularJS defines a concept of a so-called digest cycle. This cycle can be considered as a loop, during which AngularJS checks if there are any changes to all the variables watched by all the $scopes. So if you have $scope.myVar defined in your controller and th...
Django connection to PostgreSQL: “Peer authentication failed”
... is set up to deny ordinary users from connecting through UNIX sockets but allows them over TCP/IP from localhost.
– Jim Garrison
May 1 '13 at 1:05
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