Question 1

How to format money in Go with European thousand and decimal separators?

Accepted Answer

Use the Accounting struct with Thousand: '.' and Decimal: ',', and set the symbol like '€'. For example, Accounting{Symbol: '€', Precision: 2, Thousand: '.', Decimal: ','} formats 4999.99 as '€4.999,99'.

Question 2

Accounting library vs other Go currency formatters like gomoney?

Accepted Answer

Accounting excels in locale-aware formatting with support for precise types like big.Rat and big.Float, while gomoney might focus more on monetary operations. Choose Accounting if you need extensive locale data and type flexibility for financial display.

Question 3

How to handle custom formatting for negative values in leekchan/accounting?

Accepted Answer

Set the FormatNegative field in the Accounting struct, e.g., FormatNegative: '%s (%v)' to wrap negative amounts in parentheses with the symbol, as demonstrated in the GBP examples in the README.

Question 4

Does accounting support the decimal.Decimal type from shopspring?

Accepted Answer

Yes, it has specific functions like FormatMoneyDecimal for shopspring/decimal, but you need to import that package separately. The README shows examples using github.com/shopspring/decimal for integration.

Question 5

Performance tips for using accounting in high-throughput Go applications?

Accepted Answer

Avoid the general FormatMoney function and use type-specific ones like FormatMoneyInt or FormatMoneyBigRat to bypass reflection overhead. The README recommends this for speed, especially in performance-critical paths.

Question 6

How to parse a formatted currency string back to a number in Go with accounting?

Accepted Answer

Use the UnformatNumber function with the currency code and precision. For instance, UnformatNumber('$45,000.50', 2, 'USD') returns '45000.50', stripping separators and converting to a point decimal.

accounting

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