Marcus Kazmierczak mkaz

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

	[package]
	name = "guess-game"
	version = "0.1.0"
	edition = "2021"

	# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

	[dependencies]
	rand = "0.8.5"

	const {__} = wp.i18n; // Import __() from wp.i18n
	const {registerBlockType} = wp.blocks; // Import registerBlockType() from wp.blocks
	const {
	RichText
	} = wp.blockEditor;
	/**
	* Register block
	*/
	export default registerBlockType(
	"tct/article-card-block",

	#!/usr/bin/env python3
	import os, string

	max = 1000000

	# seed list with first two primes
	primes = [2,3]

	# set number
	start_num = 4

	#!/usr/bin/env python3

	""" How many people currently in space """

	import json, requests, sys
	response = requests.get('http://api.open-notify.org/astros.json')
	data = response.json()
	print(data["number"])
	sys.exit(0)

	<html>
	<head>
	<title>Squiggle Demo</title>
	<script src="http://d3js.org/d3.v2.js"></script>
	<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
	<script src="http://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.3.3/underscore-min.js "></script>
	<script src="squiggle.js"></script>

	<style>
	@font-face {

	<!DOCTYPE html>
	<head>
	<style>
	@font-face {
	font-family: 'xkcd';
	src: url('http://dl.dropbox.com/u/12305244/Humor-Sans.ttf');
	}

	body {
	font-size: 14px;

	#!/usr/bin/env python

	"""
	Use Selenium to Measure Web Timing

	Performance Timing Events flow

	navigationStart -> redirectStart -> redirectEnd -> fetchStart -> domainLookupStart -> domainLookupEnd
	-> connectStart -> connectEnd -> requestStart -> responseStart -> responseEnd
	-> domLoading -> domInteractive -> domContentLoaded -> domComplete -> loadEventStart -> loadEventEnd