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How do I get a substring of a string in Python?
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3271
>>> x = "Hello World!"
>>> x[2:]
'llo World!'
>>> x[:2]
'He'
>&g...
How to format time since xxx e.g. “4 minutes ago” similar to Stack Exchange sites
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25 Answers
25
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Is it possible to specify your own distance function using scikit-learn K-Means Clustering?
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Here's a small kmeans that uses any of the 20-odd distances in
scipy.spatial.distance, or a user function.
Comments would be welcome (this has had only one user so far, not enough);
in particular, what are your N, dim, k, metric ?
#!/usr/bin/env python
# kmeans.py us...
C# difference between == and Equals()
I have a condition in a silverlight application that compares 2 strings, for some reason when I use == it returns false while .Equals() returns true .
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round up to 2 decimal places in java? [duplicate]
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12 Answers
12
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What is the easiest way to push an element to the beginning of the array?
...elf, moving other elements upwards.
And in use:
irb>> a = [ 0, 1, 2]
=> [0, 1, 2]
irb>> a.unshift('x')
=> ["x", 0, 1, 2]
irb>> a.inspect
=> "["x", 0, 1, 2]"
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Best way to make Java's modulus behave like it should with negative numbers?
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Maarten Bodewes
76.4k1212 gold badges114114 silver badges213213 bronze badges
answered Dec 10 '10 at 18:46
Peter LawreyPete...
Simple explanation of MapReduce?
... them back in the same kind of list.
suppose I have a list of numbers: [1,2,3] and I want to double every number, in this case, the function to "double every number" is function x = x * 2. And without mappings, I could write a simple loop, say
A = [1, 2, 3]
foreach (item in A) A[item] = A[item] * ...
Is there a way to perform “if” in python's lambda
In python 2.6 , I want to do:
16 Answers
16
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