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What Leisure is

Leisure is a new programming language, along with its online, collborative, document-based, multilingual environment.

Each collaborative Leisure document is like its own virtual machine. You can interact with it and even change it as it runs.

Leisure harkens back to many earlier environments:

  • Smalltalk: 1972
  • The Lisp Machine: 1981 (or earlier)
  • Hypercard: 1987
  • Mathematica: 1991

Of these systems, Leisure is probably most similar to Hypercard and Mathematica, but it differs in several important ways:

  • Online
  • Collaborative
  • Multilingual
  • Free

Document change flow

(LOCAL)

user change

event handlers

data storage

(LOCAL AND REMOTE)

data update

run update handlers

render data

Developing

Git

make sure Git is installed

Repository

Clone the repository: https://github.com/zot/Leisure

Node

Make sure node is installed

Meteor

Make sure meteor is installed make sure meteor-npm is installed https://meteorhacks.com/complete-npm-integration-for-meteor.html

  • on Linux/OS X
    • mrt add npm
  • on Windows
    • npm install -g meteor-npm #single time operation
    • meteor-npm #type inside the Leisure project

EMACS

Coffeescript on Windows

flycheck: Get libxml2 from http://sourceforge.net/projects/ezwinports/files/ unzip the libxml2 archive and make sure the *.dll files are in your path