Dev Tools · 1h ago
Why Software Must Use ISO Currency Codes, Not Dollar Signs
The dollar sign ($) is shared by over 20 currencies, causing ambiguity in financial APIs. ISO 4217 assigns unique three-letter codes like USD, CAD, and AUD to eliminate confusion. Backend systems should always use these codes, reserving symbols for frontend display only.
Meridian48 take
A basic but crucial reminder for developers: relying on currency symbols in backend logic is a recipe for costly errors, especially in global fintech.
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