Source Code: https://github.com/rohanphanse/calculator

Live Demo: https://rohanphanse.github.io/calculator/

Functional Calculator

An intuitive and easy-to-use web calculator with the power of functional programming languages and the terminal!

My goal for this project was to create a web calculator that offered standard calculator functions as well as more powerful features from programming languages through a simple and accessible syntax.

As a challenge to myself, I decided not to use any external libraries. The entire calculator including the parser, evaluation engine, and UI was implemented with a few thousand lines of JavaScript code!

Functional programming features: map, filter, reduce, functions as first-class objects, anonymous functions, type checking, lambda capture, currying, conditional logic

Terminal features: up and down arrow keys move through history, use help on any function or keyword to learn how to use it, syntax highlighting, autocomplete

Additional features: locally save user-defined variables and functions, base and unit conversions, polynomial root solvers, linear algebra, differentiation

Link to demo: https://rohanphanse.github.io/calculator

Built-in constants and functions

Define custom variables and functions

Use functional paradigms like lambda capture and currying

Unit conversions, linear algebra, and more!