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10 Scala One Liners to Impress Your Friends

Here are 10 one-liners which show the power of scala programming, impress your friends and woo women; ok, maybe not. However, these one liners are a good set of examples using functional programming and scala syntax you may not be familiar with. I feel there is no better way to learn than to see real examples.

Updated: June 17, 2011 - I'm amazed at the popularity of this post, glad everyone enjoyed it and to see it duplicated across so many languages. I've included some of the suggestions to shorten up some of my scala examples. Some I intentionally left longer as a way for explaining / understanding what the functions were doing, not necessarily to produce the shortest possible code; so I'll include both.

1. Multiple Each Item in a List by 2

The map function takes each element in the list and applies it to the corresponding function. In this example, we take each element and multiply it by 2. This will return a list of equivalent size, compare to o

Intro

Bellow follows a list of aliases, split between beginner and advanced.

To start using them right away you should place the aliases you like most in a file like ~/.zsh/git. Now all that remains is to add the following line to your ~/.zshrc or ~/.bashrc:

. ~/.zsh/git # git aliases

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

	#! /usr/bin/env python
	"""
	Author: Jeremy M. Stober
	Program: SOFTMAX.PY
	Date: Wednesday, February 29 2012
	Description: Simple softmax function.
	"""

	import numpy as np
	npa = np.array