Unlike Perl, you can't to my knowledge match a regular expression inside an if statement in Python and assign the result to a varaible at the same moment. This leads to typical constructs like this:
match = re.search(REGEX, STRING)
if match:
# do something
So far, so Python. But what if I ...
Someone on SO asked how to fill in the NA's with row means. His example code was:
cancer1 <- read.table("cancer.txt", stringsAsFactors = FALSE, quote='', header=TRUE,sep='\t')
Since he didn't provide the data I think we can simulate it with
cancer1 <- data.frame(a=rep(c(1,2,3,NA),10),b=rep(...2 days ago as I was working on my game I decided I wanted to include some sort of a video showing sneak peaks of the themes and tutorials and such. I then decided to check how to record my scene or nodes. After looking around i concluded there was no easy way to do it so I decided to make my own ...
I just wrote a snow animation in Python. I think this is fairly clean but I have a few things that I don't like.
from random import randrange
import time
# Snow animation
# Snow is simply the `#` symbol here. Half of the snow moves at 1 char
# per frame, while the other half moves at 0.5 chars ...
I am creating a series of column graphs that show performance on one metric, but would like to highlight the columns which belong top performers on another, related metric. I do not have the data for the related metric, only a list of IDs which are top performers.
Conditional formatting makes i...
Continuing my C++ saga, this is the third project for my CS1 class:
Buoyancy is the ability of an object to float. Archimedes' principle
states that the buoyant force is equal to the weight of the fluid that
is displaced by the submerged object. The buoyant force can be
computed by
...
Does a UIView object with an embedded UIButton and IBAction violate MVC principles?
Example:
class MyView: UIView {
@IBOutlet weak var myButton: UIButton!
@IBAction func myButtonTapped(sender: AnyObject) {
// do something
}
}
Are controllers the only objects that are sup...
Yesterday, I came up with a simple method to predict the next value in a sequence.
The method works like this:
Start with a sequence, say 1,4,9,16,25,36, call it Δ0.
Now, Δ1 is the difference between every adjacent element in Δ0. (The first element is left unchanged). For our chosen sequence, ...
I have these two tables:
// users
+----+--------+----------------------+
| id | name | email |
+----+--------+----------------------+
| 1 | Jack | jack012@gmail.com |
| 2 | John | J_mx@ymail.com |
| 3 | Peter | Matrix_P@yahoo.com |
+----+--------+-------------...
Currently all this does is retrieve data from specific columns, the final result will be that I will check the data to make sure that it passes the test cases, but I want to look at this foreach right now and see if I can't make it a little simpler.
A lot of what I have coded I have come back ...
Take this example code block:
In [1]: text = "I'm a stringy!"
In [2]: print(text)
I'm a stringy!
In [3]: print(text[:-1])
I'm a stringy
In [4]: print(text[::-1])
!ygnirts a m'I
In [5]: print(text[:4:-1])
In [6]: print((text:4:-1] + text[:3:5])[::-1])
I stringy!
In [7]: print(text[::-1][::-...
