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What is the difference between map and flatMap and a good use case for each?
...ee the difference how it is processing the data.
Below is the sample data file.
hadoop is fast
hive is sql on hdfs
spark is superfast
spark is awesome
The above file will be parsed using map and flatMap.
Using map
>>> wc = data.map(lambda line:line.split(" "));
>>> wc.collect...
How do I implement __getattribute__ without an infinite recursion error?
... Oh that doesn't quiet work when you run the class though, no? File "Script1.py", line 5, in init self.test = 20 AttributeError: can't set attribute
– Greg
Dec 16 '08 at 17:06
...
How to set DialogFragment's width and height?
I specify the layout of my DialogFragment in an xml layout file (let's call it layout_mydialogfragment.xml ), and its layout_width and layout_height attributes particularly (to be 100dp each let's say). I then inflate this layout in my DialogFragment's onCreateView(...) method as follows:
...
Find which commit is currently checked out in Git
I'm in the middle of a git bisect session.
5 Answers
5
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Changing the cursor in WPF sometimes works, sometimes doesn't
...ver that particular page/usercontrol? If not, I'd suggest using Mouse.OverrideCursor:
Mouse.OverrideCursor = Cursors.Wait;
try
{
// do stuff
}
finally
{
Mouse.OverrideCursor = null;
}
This overrides the cursor for your application rather than just for a part of its UI, so the problem you'...
Is there an equivalent to CTRL+C in IPython Notebook in Firefox to break cells that are running?
...just sends a SIGINT signal to the code that you're currently running (this idea is supported by Fernando's comment here), which is the same thing that hitting CTRL+C would do. Some processes within python handle SIGINTs more abruptly than others.
If you desperately need to stop something that is r...
Difference between fold and reduce?
...st element type, whereas they can differ in fold as the accumulator is provided separately. This is reflected in the types:
List.fold : ('State -> 'T -> 'State) -> 'State -> 'T list -> 'State
List.reduce : ('T -> 'T -> 'T) -> 'T list -> 'T
In addition reduce throws an e...
UTF-8, UTF-16, and UTF-32
...es these into 8 bits (like ASCII). It is also advantageous in that a UTF-8 file containing only ASCII characters has the same encoding as an ASCII file.
UTF-16 is better where ASCII is not predominant, since it uses 2 bytes per character, primarily. UTF-8 will start to use 3 or more bytes for the h...
Transpose/Unzip Function (inverse of zip)?
...finite_iterable(result)
... hangs ...
Traceback (most recent call last):
File "...", line 1, in ...
File "...", line 2, in transpose_finite_iterable
MemoryError
So how can we deal with this case?
... and here comes the deque
After we take a look at docs of itertools.tee function, there is Py...
Find MongoDB records where array field is not empty
...nexpected results. For example: db.doc.find({'nums': { $gt: [] }}).hint({ _id: 1 }).count() returns the right number, while db.doc.find({'nums': { $gt: [] }}).hint({ nums: 1 }).count() returns 0.
– wojcikstefan
Mar 4 '17 at 17:51
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