This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.
To capture the video (filesize: 19MB), using the free "QuickTime Player" application:
//------------------------------------------------------------- | |
// | |
// Hypothesis: | |
// | |
// Promises/A is a Monad | |
// | |
// To be a Monad, it must provide at least: | |
// - A unit (aka return or mreturn) operation that creates a corresponding | |
// monadic value from a non-monadic value. | |
// - A bind operation that applies a function to a monadic value |