sync.OnceFunc, OnceValue, OnceValues: When Each Beats sync.Once
📰 Dev.to · Gabriel Anhaia
Learn when to use sync.OnceFunc, OnceValue, and OnceValues over sync.Once in Go 1.21 for cleaner and more efficient initialization patterns
Action Steps
- Use sync.OnceFunc when you need to initialize a function with a return value
- Apply sync.OnceValue for simple initialization with a single value
- Utilize sync.OnceValues when dealing with multiple values that need to be initialized concurrently
- Avoid the error-return trap by handling errors properly in your initialization functions
- Test your initialization patterns with different concurrency scenarios to ensure correctness
Who Needs to Know This
Go developers and engineers who want to improve their concurrency handling and initialization patterns will benefit from this knowledge, as it helps to avoid the error-return trap and write more efficient code
Key Insight
💡 Choose the right sync primitive based on your initialization needs to write cleaner and more efficient Go code
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🚀 Improve your Go concurrency skills with sync.OnceFunc, OnceValue, and OnceValues! 🚀
Key Takeaways
Learn when to use sync.OnceFunc, OnceValue, and OnceValues over sync.Once in Go 1.21 for cleaner and more efficient initialization patterns
Full Article
Go 1.21's sync.OnceFunc / OnceValue / OnceValues vs sync.Once. When each is the cleanest, the error-return trap, init patterns.
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