Stop Storing Money in float64
📰 Dev.to · Simon Klinkert
Learn why storing money in float64 is problematic and how to handle monetary values correctly in Go
Action Steps
- Avoid using float64 for monetary values due to precision issues
- Use a decimal or fixed-point representation instead
- Choose a suitable library or data type in Go, such as github.com/shopspring/decimal
- Implement proper rounding and formatting for monetary values
- Test and verify the correctness of monetary calculations
Who Needs to Know This
Backend developers and engineers working with financial applications can benefit from understanding the pitfalls of using float64 for monetary values and learn alternative approaches
Key Insight
💡 Float64 is not suitable for storing monetary values due to precision issues, use decimal or fixed-point representations instead
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💸 Don't store money in float64! Learn why and how to handle monetary values correctly in Go
Key Takeaways
Learn why storing money in float64 is problematic and how to handle monetary values correctly in Go
Full Article
I've been writing Go backends for over a decade, and money handling is the one topic where I keep...
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