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What is the best way to compute trending topics or tags?
...scores.
Please see Wikipedia for more information, about z-scores.
Code
from math import sqrt
def zscore(obs, pop):
# Size of population.
number = float(len(pop))
# Average population value.
avg = sum(pop) / number
# Standard deviation of population.
std = sqrt(sum(((c - ...
Should I instantiate instance variables on declaration or in the constructor?
...the compiler:
{
a = new A();
}
Check Sun's explanation and advice
From this tutorial:
Field declarations, however, are not part of any method, so they cannot be executed as statements are. Instead, the Java compiler generates instance-field initialization code automatically and puts it...
throw checked Exceptions from mocks with Mockito
....
The List interface does not provide for a checked Exception to be thrown from the get(int index) method and that is why Mockito is failing.
When you create the mocked List, Mockito will use the definition of List.class to creates its mock.
The behavior you are specifying with the when(list.get(...
Learning Regular Expressions [closed]
...egular expressions! (The re in grep refers to regular expressions.)
Order from the menu
Adding just a little complexity, you can match either 'Nick' or 'nick' with the pattern [Nn]ick. The part in square brackets is a character class, which means it matches exactly one of the enclosed characters. ...
Apply .gitignore on an existing repository already tracking large number of files
...s.
Then run this command:
git rm -r --cached .
This removes everything from the index, then just run:
git add .
Commit it:
git commit -m ".gitignore is now working"
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Correct file permissions for WordPress [closed]
...
This solution will prevent wordpress from installing 'automatic security updates'. You need to manually run the steps above for each minor wordpress update.
– Jeroen
Jan 13 '17 at 10:49
...
What is the reason for having '//' in Python? [duplicate]
...on 2.X:
>>> 10/3
3
>>> # to get a floating point number from integer division:
>>> 10.0/3
3.3333333333333335
>>> float(10)/3
3.3333333333333335
In Python 3:
>>> 10/3
3.3333333333333335
>>> 10//3
3
For further reference, see PEP238.
...
Change a column type from Date to DateTime during ROR migration
I need to change my column type from date to datetime for an app I am making. I don't care about the data as its still being developed.
...
Best practice for partial updates in a RESTful service
... only certain operations on the record are allowed, like change the status from ENABLED to DISABLED. (I have more complex scenarios than this)
...
How to completely remove borders from HTML table
...tion is officially deprecated (still works though), so if you are starting from scratch, you should go with the jnpcl's border-collapse solution.
I actually quite dislike this change so far (don't work with tables that often). It makes some tasks bit more complicated. E.g. when you want to include ...