Libraries tagged by immutable

Save config options in immutable objects.

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Immutable, type-aware PHP Collection.

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Immutable DTOs with bidirectional casting. No framework required. 8x faster than the alternative.

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Immutable, zero-runtime-dependency multi-calendar library for PHP 8.1+. Gregorian, Jalali (Shamsi), and Hijri, differentially tested against ICU.

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Simple, immutable data structures

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A lightweight zero-dependency PHP library for building immutable, serializable objects with validation capabilities.

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Immutable numeric value object with chainable arithmetic operations and Laravel Number formatting

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Functional programming utilities for PHP 8.4+ featuring pipe, compose, and lazy evaluation

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PHP type safe, immutable calendar library

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Bridge for Aeon Calendar Holidays library and Yasumi

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A simple functional programming library.

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Functional, immutable and extensible enumerations and collections for PHP 5.3.

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Vortos Release — immutable build manifests, schema fingerprinting, rollback invariant math, semver/changelog, and coordinated multi-repo tagging. Write-once persistence enforced at the storage layer; provenance-ready for cosign/SLSA attestation.

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Vortos Deploy — provider-agnostic deployment orchestration: pure planner, strategy-as-policy (blue-green/rolling/recreate/canary), immutable definition surface (config/deploy.php), per-env layering with drift report, content-hashed reviewable plans (secret-free, signing-ready), and conformance TCKs for all driver ports. Built on the OpsKit driver pattern.

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Cell-grid value objects for terminal rendering — Buffer and Cell as immutable, fluent data model.

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