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How to declare and add items to an array in Python?
...y_list = list()
To add elements to the list, use append
my_list.append(12)
To extend the list to include the elements from another list use extend
my_list.extend([1,2,3,4])
my_list
--> [12,1,2,3,4]
To remove an element from a list use remove
my_list.remove(2)
Dictionaries represent a c...
Passing a dictionary to a function as keyword parameters
...operator to unpack the dictionary
So my example becomes:
d = dict(p1=1, p2=2)
def f2(p1,p2):
print p1, p2
f2(**d)
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Is it possible to specify your own distance function using scikit-learn K-Means Clustering?
...
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...
How to insert an item into an array at a specific index (JavaScript)?
...n this example we will create an array and add an element to it into index 2:
var arr = [];
arr[0] = "Jani";
arr[1] = "Hege";
arr[2] = "Stale";
arr[3] = "Kai Jim";
arr[4] = "Borge";
console.log(arr.join());
arr.splice(2, 0, "Lene");
console.log(arr.join());
...
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 MATLAB OOP slow or am I doing something wrong?
...
224
I've been working with OO MATLAB for a while, and ended up looking at similar performance issu...
Get current AUTO_INCREMENT value for any table
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Harshil Sharma
1,62111 gold badge2020 silver badges4848 bronze badges
answered Apr 4 '13 at 20:56
methaimethai
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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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How to format time since xxx e.g. “4 minutes ago” similar to Stack Exchange sites
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25 Answers
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Best way to make Java's modulus behave like it should with negative numbers?
...
Maarten Bodewes
76.4k1212 gold badges114114 silver badges213213 bronze badges
answered Dec 10 '10 at 18:46
Peter LawreyPete...