Awesome GitHub RepositoriesImmutable Date Libraries

Day.js is a lightweight utility for parsing, validating, and manipulating date objects. It provides a fluent, chainable interface that allows for complex time calculations and transformations to be performed through a sequence of readable method calls. By utilizing an immutable wrapper pattern, the library ensures data integrity by creating new instances for every operation rather than modifying existing objects. The project is distinguished by a minimalist core abstraction that maintains a small footprint by offloading non-essential features to an optional, modular plugin system. This archit

date-fns is a JavaScript date utility library providing a collection of pure functions for manipulating, formatting, and calculating dates and times. It serves as an immutable date manipulation library and a tool for time zone management, ensuring that date transformations are performed without modifying the original date objects. The library functions as a date formatting tool that converts date objects into human-readable strings using custom patterns and international locales. It includes a specific toolset for adjusting and calculating date representations across different geographical re

Luxon is a JavaScript library for parsing, validating, manipulating, and formatting dates and times. It provides a suite of immutable objects for managing points in time, durations, and intervals, ensuring that all transformations return new instances to maintain predictable state. The library distinguishes itself by leveraging the native Internationalization API and environment-based time zone databases. This architecture allows for localized date formatting and global time zone conversions without requiring external data files or additional dependencies. It also supports non-Gregorian calen

algs4 is a Java data structures library and algorithm reference collection designed as the source code for a standard computer science textbook curriculum. It provides a comprehensive suite of fundamental implementations for sorting, searching, and core data organization. The project serves as a graph theory framework, offering tools for representing directed and undirected graphs and performing complex traversals and pathfinding. It also includes a broad sorting algorithm suite and a specialized library of Java data structures, including stacks, queues, priority queues, and symbol tables. I

Dinero.js is a TypeScript-first library for creating, calculating, and formatting monetary values. It provides immutable money objects that represent amounts in the smallest currency subdivision as integers, ensuring precision and preventing floating-point errors. The library enforces same-currency rules on arithmetic operations and validates currency codes against ISO 4217 definitions at creation time. The library distinguishes itself through a calculator plugin architecture that delegates arithmetic operations to interchangeable backends, supporting number, bigint, or custom precision libra

Ceci est une bibliothèque PHP pour gérer les calculs financiers en utilisant des objets de valeur. Elle représente les montants monétaires sous forme d'entiers pour éviter les erreurs de précision en virgule flottante et assurer l'exactitude mathématique pendant le traitement et le stockage. La bibliothèque utilise un pattern d'objet de valeur immuable où les calculs retournent de nouvelles instances pour éviter les effets de bord. Elle emploie une arithmétique consciente des devises pour restreindre les opérations mathématiques aux objets partageant la même devise et utilise une logique basée sur des interfaces pour déléguer la conversion de devises à des fournisseurs d'échange externes. Les capacités incluent le formatage de devises internationales pour des chaînes lisibles par l'humain localisées et la sérialisation JSON standardisée pour transmettre des données monétaires à travers des API réseau.

Tempo is a JavaScript date manipulation library that provides a suite of tools for parsing, formatting, and calculating dates and times. It serves as a date arithmetic engine, a locale-aware formatter, and a timezone offset manager for native JavaScript date objects. The library includes a dedicated ISO 8601 date parser for validating and converting standardized strings into date objects. It handles geographic normalization through IANA timezone offset management and utilizes the native Internationalization API for region-specific date formatting. The project covers a broad range of date and