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Iterating over dictionaries using 'for' loops
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key is just a variable name.
for key in d:
will simply loop over the keys in the dictionary, rather than the keys and values. To loop over both key and value you can use the following:
For Python 3.x:
for key, value in d....
Why is Everyone Choosing JSON Over XML for jQuery? [closed]
I thought XML is highly portable and can be used as a mini database. I have seen XML used everywhere. I even see large companies switching over to JSON . Even Microsoft has integrated support for JSON. What is all the hype over JSON?
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Task not serializable: java.io.NotSerializableException when calling function outside closure only o
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RDDs extend the Serialisable interface, so this is not what's causing your task to fail. Now this doesn't mean that you can serialise an RDD with Spark and avoid NotSerializableException
Spark is a distributed computing engine and its main abstra...
What is the difference between “mvn deploy” to a local repo and “mvn install”?
My team uses an internal team maven repo that is shared from a development server using Apache. We also run the Continuum CI server on the same machine. Maven builds in Continuum are run with the "install" goal, which copies the final artifact directly into the shared directory.
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What is the difference between an abstract function and a virtual function?
What is the difference between an abstract function and a virtual function? In which cases is it recommended to use virtual or abstract? Which one is the best approach?
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How do I list all remote branches in Git 1.7+?
I've tried git branch -r , but that only lists remote branches that I've tracked locally. How do I find the list of those that I haven't? (It doesn't matter to me whether the command lists all remote branches or only those that are untracked.)
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Is it acceptable and safe to run pip install under sudo?
...th my Windows PC at work; however on my Mac I've come across frequent permission denied errors while writing to log files or site-packages.
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How to permanently set $PATH on Linux/Unix? [closed]
...pends on the purpose.
The variable values are usually stored in either a list of assignments or a shell script that is run at the start of the system or user session. In case of the shell script you must use a specific shell syntax and export or set commands.
System wide
/etc/environment List of...
Implications of foldr vs. foldl (or foldl')
... looks like
f (... (f (f x y1) y2) ...) yk
An important difference here is that if the result of f x y can be computed using only the value of x, then foldr doesn't' need to examine the entire list. For example
foldr (&&) False (repeat False)
returns False whereas
foldl (&&) ...
Is it possible to listen to a “style change” event?
Is it possible to create an event listener in jQuery that can be bound to any style changes? For example, if I want to "do" something when an element changes dimensions, or any other changes in the style attribute I could do:
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