hemanth/functional-programming-jargon

Analysis updated 2026-06-21

★ 18,638Audience · developerComplexity · 1/5Setup · easy

Mindmap

mindmap
  root((FP Jargon))
    What it is
      Glossary document
      JS code examples
      Math terms explained
    Basic concepts
      Pure functions
      Currying
      Closures
    Advanced concepts
      Monads
      Functors
      Category theory
    Translations
      Portuguese and Spanish
      Chinese and Korean
      Russian and Polish

mindmap root((FP Jargon)) What it is Glossary document JS code examples Math terms explained Basic concepts Pure functions Currying Closures Advanced concepts Monads Functors Category theory Translations Portuguese and Spanish Chinese and Korean Russian and Polish

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What do people build with it?

USE CASE 1

Look up a confusing functional programming term like monad or functor with a real JavaScript code example.

USE CASE 2

Learn functional programming progressively, from basic concepts like pure functions to advanced category theory terms.

USE CASE 3

Use as a quick reference while reading functional library documentation to decode unfamiliar terminology.

What is it built with?

JavaScript

How does it compare?

	hemanth/functional-programming-jargon	sanic-org/sanic	sindresorhus/quick-look-plugins
Stars	18,638	18,639	18,639
Language	—	Python	—
Setup difficulty	easy	easy	easy
Complexity	1/5	3/5	1/5
Audience	developer	developer	developer

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · easy Time to first run · 5min

No license information mentioned in the explanation.

In plain English

Functional Programming Jargon is a glossary that explains the technical terms used in functional programming, a style of writing software, in plain language with JavaScript examples. Functional programming has its own vocabulary full of terms borrowed from mathematics (like monad, functor, morphism, and applicative) that can be intimidating for developers coming from other backgrounds. Each entry in the glossary defines a term, shows a short code example illustrating the concept, and sometimes links to further reading. Topics covered include common concepts like currying (transforming a multi-argument function into a chain of single-argument functions), pure functions (functions without side effects), closures, and function composition, as well as more advanced mathematical concepts from category theory. The examples are written in JavaScript, and the glossary is available in translations for many other languages and programming environments including Portuguese, Spanish, Chinese, Russian, Korean, Polish, and others. This is a reference document, not a software library.

Copy-paste prompts

Prompt 1

Based on the functional-programming-jargon glossary, explain what a functor is in plain English and show me a JavaScript example, is mapping over an array an example of a functor?

Prompt 2

I keep seeing monad in functional programming docs. Using the functional-programming-jargon definitions, explain what a monad is and give me the simplest possible JavaScript example.

Prompt 3

Explain the difference between currying and partial application using functional-programming-jargon definitions, and show me how to write a curried add function in JavaScript from scratch.

Prompt 4

I want to write more functional JavaScript. Using concepts from functional-programming-jargon, refactor a for-loop that mutates state into a functional style using map, filter, and reduce.

Frequently asked questions

What is functional-programming-jargon?

A plain-English glossary of functional programming terms, like monad, functor, and currying, explained with simple JavaScript examples so developers can decode the jargon without a math degree.

What license does functional-programming-jargon use?

No license information mentioned in the explanation.

How hard is functional-programming-jargon to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is functional-programming-jargon for?

Mainly developer.

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