A small C++17 library meant to simplify the composition of nullable types in a generic, type-safe, and declarative way.

Rust like result and option implementation for golang

A simple and ergonomic optional type for Go.

Pluggable type-checking for Java

Modern, Better safety and productivity to C

🌯 The prettiest TypeScript implementation of Maybe monad.

A standard library for verified C — with explicit, composable verified primitives that can scale.

The Option type for PHP

A simple representation of optional values

PrimeFuncPack Core.Taggeds is a core pack for .NET consisting of fundamental tagged types targeted for use in functional programming: Optional and Result monads, Tagged Union, as well as the convert extensions.

Package opt implements an optional-type, for the Go programming language. In other programming languages, an optional-type might be know as: a option type, or a maybe type.

Write Honest functions in C# or convert Pure functions to Honest functions using Optional and Result monads. Combine them with LINQ and create extremely powerful functional compositions.

Optional object type

typX is a go package that provides useful types, helpers and utilities.

Implementations of C++11, 14, and 17 features.

Maybe is a utility for handling optional values safely and cleanly in TypeScript. Inspired by Haskell and OCaml, it provides a clear and functional approach to dealing with values that may or may not exist.

A maybe type for Java

a proposal for a better implementation of the Optional class in Java

PHP version of Javas Optional class is used to represent a container object which may or may not contain a non-null value.