beardedtim

Monads and Why The Hell We Need Weird Words

Once you understand what monads are, and why they exist, you lose the ability to explain it to anybody.

Here's to hoping I don't understand them

Table of Contents

• The Monad Rules
• Common Examples
• Why This Matter

ruizb

The following section is not part of monet.js documentation, but I think it's worth showing how we can compose readers using fp-ts.

Reader composition

Let's say we have the following piece of code:

interface Dependencies {
  logger: { log: (message: string) => void }
 env: 'development' | 'production'

castarco

// This first file contains the first iteration of this pattern. It's already
// nice, but not enough for full-fledged IoC libraries.
// There's a second file in this same gist that goes one step further, although,
// for now, it still needs some extra polish.

// -----------------------------------------------------------------------------
// First: the two main interfaces.
// They are the core of the pattern.
// -----------------------------------------------------------------------------
export interface WritableRegistry {