Variables

Variables and Types in Kotlin

Kotlin’s type system is one of its defining features. It combines the safety of static typing with the convenience of type inference, so you rarely need to write explicit type annotations while …

Variables and Types in Julia

Julia’s type system is one of its greatest strengths. It’s dynamically typed—you don’t need to declare types—but under the hood, Julia’s compiler uses type inference to …

Variables and Types in JavaScript

JavaScript is a dynamically and weakly typed language — you never declare a type for a variable, and values can be implicitly coerced between types. This flexibility makes JavaScript approachable but …

Variables and Types in Java

Java is a statically typed language, which means every variable must be declared with a specific type before it can be used. The compiler enforces these types at compile time, catching type errors …

Variables and Types in J

In most languages, variables hold single values—a number, a string, a boolean. In J, the fundamental unit of data is the array. Even a single number is an array (a zero-dimensional one). Understanding …

Variables and Types in Icon

Icon takes a relaxed approach to variables and types. Variables don’t need declarations — just assign a value with := and the variable springs into existence. The type belongs to the value, not …

Variables and Types in Haskell

In most languages, variables are containers that hold values you can change at will. Haskell takes a fundamentally different approach. As a purely functional language, Haskell has no mutable variables …

Variables and Types in Hare

Hare is a statically and strongly typed systems programming language, meaning every value has a known type at compile time and implicit conversions between types are restricted. This design catches …

Variables and Types in Groovy

Introduction

Groovy offers one of the most flexible type systems on the JVM. Unlike Java, where every variable requires an explicit type declaration, Groovy lets you choose between dynamic typing with …

Variables and Types in Go

Go takes a pragmatic approach to variables and types. It is statically and strongly typed, meaning every variable has a fixed type determined at compile time, but Go’s type inference often lets …