exchange 0.6.0
The Exchange Gem gives you easy access to currency functions directly on your Numbers. Imagine a conversion as easy as 1.eur.to_usd or even better 1.eur.to_usd(:at => Time.now - 84600) which gets you an exchange at the rates of yesterday.
Gemfile:
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安裝:
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Runtime 相依性套件 (1):
exchange
>= 0