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How to split a string in Haskell?
...kage for this called split.
cabal install split
Use it like this:
ghci> import Data.List.Split
ghci> splitOn "," "my,comma,separated,list"
["my","comma","separated","list"]
It comes with a lot of other functions for splitting on matching delimiters or having several delimiters.
...
How to create a numpy array of all True or all False?
...s full of ones and zeros respectively, take an optional dtype parameter:
>>> numpy.ones((2, 2), dtype=bool)
array([[ True, True],
[ True, True]], dtype=bool)
>>> numpy.zeros((2, 2), dtype=bool)
array([[False, False],
[False, False]], dtype=bool)
...
How to frame two for loops in list comprehension python
...ing, something like
[a if a else b for a in sequence]
See the Demo -
>>> tags = [u'man', u'you', u'are', u'awesome']
>>> entries = [[u'man', u'thats'],[ u'right',u'awesome']]
>>> [entry for tag in tags for entry in entries if tag in entry]
[[u'man', u'thats'], [u'righ...
What are advantages of Artificial Neural Networks over Support Vector Machines? [closed]
...dging from the examples you provide, I'm assuming that by ANNs, you mean multilayer feed-forward networks (FF nets for short), such as multilayer perceptrons, because those are in direct competition with SVMs.
One specific benefit that these models have over SVMs is that their size is fixed: they a...
Common elements comparison between 2 lists
...
>>> list1 = [1,2,3,4,5,6]
>>> list2 = [3, 5, 7, 9]
>>> list(set(list1).intersection(list2))
[3, 5]
share
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...
python tuple to dict
...
Try:
>>> t = ((1, 'a'),(2, 'b'))
>>> dict((y, x) for x, y in t)
{'a': 1, 'b': 2}
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improve this answer
...
Take the content of a list and append it to another list
...extend(list1)
instead of
list2.append(list1)
Here's the difference:
>>> a = range(5)
>>> b = range(3)
>>> c = range(2)
>>> b.append(a)
>>> b
[0, 1, 2, [0, 1, 2, 3, 4]]
>>> c.extend(a)
>>> c
[0, 1, 0, 1, 2, 3, 4]
Since list.extend...
How to join two sets in one line without using “|”
...nswered Jul 2 '13 at 15:57
ovrwngtvityovrwngtvity
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...
Change one value based on another value in pandas
..." + df.type + ", " + \
df.age.astype(str) + " year" + np.where(df.age > 1, 's', '')
In [3]: df
Out[3]:
animal type age
-------------------------------------
0 dog, hound, 5 years hound 5
1 cat, ragdoll, 1 year ragdoll 1
Modifying multiple columns with con...
What is :: (double colon) in Python when subscripting sequences?
...q[::n] is a sequence of each n-th item in the entire sequence.
Example:
>>> range(10)[::2]
[0, 2, 4, 6, 8]
The syntax is:
seq[start:end:step]
So you can do:
>>> range(100)[5:18:2]
[5, 7, 9, 11, 13, 15, 17]
...