Demonstrate Go constructor patterns including functional options and builders.
npx skills add https://github.com/gofhir/validator --skill go-constructors
Please help me install this Agent Skill. Skill: go-constructors Source: https://github.com/gofhir/validator/tree/main/.claude/skills/go-constructors Command: npx skills add https://github.com/gofhir/validator --skill go-constructors
This Skill helps developers write cleaner, more flexible, and maintainable Go code by demonstrating various patterns for creating objects and configuring APIs.
New*, panic-on-error MustNew*, versioned constructors, option structs, functional options (WithX), and builder patterns.Show me examples of using functional options to configure a Go struct.
High-intent search queries and answers about installing and using this skill.
Go constructor patterns range from simple `New*` functions for basic initialization to `MustNew*` for panic-on-error scenarios, and builder patterns for complex, multi-step object assembly.
Use functional options (`WithX`) for extensible API design where defaults are common, whereas option structs are better for configurations requiring multiple mandatory fields or simpler struct initialization.
Design extensible Go library APIs using functional options and versioned constructors, allowing you to add new configuration parameters without changing existing function signatures or breaking callers.
Yes, `MustNew*` constructors panic on error during object initialization, making them suitable for Go scenarios where configuration failures are irrecoverable and should halt program execution immediately.
Builder patterns in Go add structural complexity and require more boilerplate code than simple constructors, making them less ideal for lightweight object initialization or straightforward API configuration.
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