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How to convert floats to human-readable fractions?
...l number
** David Eppstein / UC Irvine / 8 Aug 1993
**
** With corrections from Arno Formella, May 2008
**
** usage: a.out r d
** r is real number to approx
** d is the maximum denominator allowed
**
** based on the theory of continued fractions
** if x = a1 + 1/(a2 + 1/(a3 + 1/(a4 + ...)))
** t...
Download file from web in Python 3
I am creating a program that will download a .jar (java) file from a web server, by reading the URL that is specified in the .jad file of the same game/application. I'm using Python 3.2.1
...
What is the difference between hg forget and hg remove?
I want mercurial to remove several files from the current state of the repository. However, I want the files to exist in prior history.
...
Remove files from Git commit
...question of moving the mistakenly committed files back to the staging area from the previous commit, without cancelling the changes done to them. This can be done like Paritosh Singh suggested:
git reset --soft HEAD^
or
git reset --soft HEAD~1
Then reset the unwanted files in order to leave t...
Sending HTML email using Python
...
From Python v2.7.14 documentation - 18.1.11. email: Examples:
Here’s an example of how to create an HTML message with an alternative plain text version:
#! /usr/bin/python
import smtplib
from email.mime.multipart im...
Why should I avoid multiple inheritance in C++?
...re true for multiple inheritance.
Does your object really needs to inherit from another? A Car does not need to inherit from an Engine to work, nor from a Wheel. A Car has an Engine and four Wheel.
If you use multiple inheritance to resolve these problems instead of composition, then you've done som...
When do you use the Bridge Pattern? How is it different from Adapter pattern?
...e aspects of the Adapter pattern in the Bridge pattern. However, to quote from this article:
At first sight, the Bridge pattern looks a lot like the Adapter pattern in that a class is used to convert one kind of interface to another. However, the intent of the Adapter pattern is to make one or ...
Git: How to remove file from index without deleting files from any repository
...git checkout (per comment by William Pursell; but remember to re-remove it from the index!):
git checkout @{1} -- foo.conf && git rm --cached foo.conf
If they have taken other actions since pulling your deletion (or they are pulling with rebase into a detached HEAD), they may need somethi...
What are free monads?
...if X is a Y with some extra stuff P, then a "free X" is a a way of getting from a Y to an X without gaining anything extra.
Examples: a monoid (X) is a set (Y) with extra structure (P) that basically says it has an operation (you can think of addition) and some identity (like zero).
So
class Mono...
Parse email content from quoted reply
I'm trying to figure out how to parse out the text of an email from any quoted reply text that it might include. I've noticed that usually email clients will put an "On such and such date so and so wrote" or prefix the lines with an angle bracket. Unfortunately, not everyone does this. Does anyon...