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EasyAnchor

NOASSERTIONSwift3.0.1

A declarative, extensible Swift library for simplifying Auto Layout with a fluent builder syntax.

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457 stars26 forks0 contributors

What is EasyAnchor?

EasyAnchor is a Swift library that simplifies Auto Layout with a declarative, fluent API. It reduces boilerplate code by providing intuitive methods for creating, updating, and managing constraints programmatically on iOS and macOS. The library helps developers build dynamic UIs faster while maintaining readability and extensibility.

Target Audience

iOS and macOS developers who build UIs programmatically using Auto Layout and prefer a concise, Swift-native syntax over verbose NSLayoutConstraint code.

Value Proposition

Developers choose EasyAnchor for its minimal learning curve, close alignment with native Auto Layout APIs, and powerful features like constraint inference, grouping, and retrieval—all without introducing heavy abstractions.

Overview

⚓️ Declarative, extensible, powerful Auto Layout

Use Cases

Best For

  • Building complex, responsive UIs entirely in code with Auto Layout
  • Reducing repetitive constraint boilerplate in Swift projects
  • Creating dynamic layouts with animated constraint changes
  • Implementing paging scroll views or evenly spaced views programmatically
  • Managing multiple constraint sets for different screen sizes or orientations
  • Extending Auto Layout with custom layout logic via ConstraintProducer

Not Ideal For

  • Projects heavily reliant on Interface Builder or storyboards for visual layout design
  • Teams strictly minimizing third-party dependencies to reduce maintenance overhead
  • Developers building UIs with reactive frameworks like Combine or RxSwift where data-driven bindings are preferred
  • Apps with static, non-responsive layouts that don't require programmatic constraint management

Pros & Cons

Pros

Fluent Builder Syntax

Provides a chainable, readable API that drastically reduces Auto Layout boilerplate, as shown in examples like `a.anchor.top.left` for concise constraint definitions.

Smart Constraint Inference

Automatically infers common relationships, such as anchoring to the superview, cutting down on verbose code without sacrificing clarity.

Batch Constraint Management

Supports grouping constraints for easy activation, deactivation, and updates, which is ideal for animations or adaptive layouts across screen sizes.

Extensible Protocol Design

Allows custom layout logic through the ConstraintProducer protocol, enabling developers to build reusable builders beyond the built-in helpers.

Cons

Incomplete Debugging Tools

Lacks built-in visualization or debugging features for constraints, as noted in the README's todo list, forcing reliance on native Auto Layout debugging.

Dependency Overhead

Introduces a third-party library that may not be justified for simple projects or teams preferring to stick with pure Apple APIs to avoid updates and compatibility issues.

Limited to UIKit/AppKit

Does not support SwiftUI or cross-platform frameworks, restricting its use to iOS and macOS projects without modern declarative UI options.

Frequently Asked Questions

Quick Stats

Stars457
Forks26
Contributors0
Open Issues1
Last commit3 years ago
CreatedSince 2017

Tags

#auto-layout#ios#layout-system#anchor#declarative-ui#ui-programming#ios-development#cocoapods#swift-library#carthage#macos#autolayout#constraints

Built With

S
Swift

Links & Resources

Website

Included in

iOS51.7k
Auto-fetched 5 hours ago

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