Functions

Functions in Java

In Java, the unit of reusable behavior is the method. Because Java is an object-oriented, class-based language, there are no free-standing functions the way there are in C or Python — every method …

Functions in JavaScript

Functions are the heart of JavaScript. As a multi-paradigm language with strong functional roots (it was originally meant to embed Scheme), JavaScript treats functions as first-class values - they can …

Functions in Julia

Functions are the heart of Julia. Where many languages treat functions as just a way to organize code, Julia builds its entire programming model around them through multiple dispatch—a function can …

Functions in Gleam

Functions are the heart of Gleam. As a functional language, Gleam treats functions as first-class values: you can store them in variables, pass them as arguments, and return them from other functions. …

Functions in Go

Functions are the fundamental building blocks of Go programs. They package reusable logic, accept inputs through parameters, and hand results back through return values. Beyond the entry point func …

Functions in Groovy

Introduction

Functions are the building blocks of reusable code. They let you name a piece of behavior, pass data into it, and get a result back—turning long scripts into small, composable pieces. In …

Functions in Hare

Functions are the primary unit of code organization in Hare. As an imperative, procedural systems language, Hare keeps functions deliberately simple — there is no method dispatch, no operator …

Functions in Haskell

Functions are not just a feature of Haskell - they are Haskell. As a purely functional language, every Haskell program is built by defining functions and composing them together. There are no …

Functions in Elixir

In Elixir, functions are the fundamental unit of code. As a functional language, Elixir treats functions as first-class values: you can bind them to variables, pass them as arguments, return them from …

Functions in Erlang

Functions are not just a feature of Erlang - they are the entire program. As a functional language, Erlang has no statements, loops, or mutable variables to fall back on. Everything you do is …