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How does it compare to the Java money API (https://jcp.org/en/jsr/detail?id=354 https://jcp.org/en/jsr/detail?id=354) and the related Kotlin DSL in https://gith

by hiddew 2y ago

How does it compare to the Java money API (https://jcp.org/en/jsr/detail?id=354 https://jcp.org/en/jsr/detail?id=354) and the related Kotlin DSL in https://github.com/hiddewie/money-kotlin/?tab=readme-ov-file#kotlin-extensions-for-javaxmoney-moneta-jsr-354 https://github.com/hiddewie/money-kotlin/?tab=readme-ov-file...?

rafaelferreira 2y ago
Another library in this space is Eric Evans' (of DDD fame) Time & Money library https://timeandmoney.sourceforge.net/ https://timeandmoney.sourceforge.net/.
stickfigure 2y ago
I'm surprised nobody has mentioned Joda Money yet: https://www.joda.org/joda-money/ https://www.joda.org/joda-money/ From the same person that brought us Joda Time (ie, what the java time API was based on). I've used Joda Money a lot and it's great. Honestly I prefer APIs that look like APIs and I think this trend towards inventing DSLs is a bad one. Rails works because there's a critical mass of people who have adopted what is essentially a whole new language on top of Ruby. A money library doesn't warrant a new language, it's unnecessary cognitive load. This new money library would look fine with simple constructors and method calls.
- nogridbag 2y ago
  I personally went with Joda money versus the Java money API mentioned above. Our needs are a bit simpler and the Joda Money API is a bit simpler to understand. Our app only deals in USD so I wrote a small utility class to help initialize Money instances so devs don't have to write: Money.of(CurrencyUnit.USD, amount) ...everywhere and do a few other things like total Money instances.
- eriksencosta 2y ago
  Joda is impressive and has great performance. The examples were written using the infix notation but you can just use regular method calls. For example: val price = Money.of(100, "USD") val shipping = Money.of(5, "USD") val subtotal = price.plus(shipping) val discount = Percentage.of(10) val total = subtotal.decreaseBy(discount) total.allocate(2) total.allocate(60.percent(), 40.percent())

by hiddew 2y ago

rafaelferreira 2y ago

Another library in this space is Eric Evans' (of DDD fame) Time & Money library https://timeandmoney.sourceforge.net/ https://timeandmoney.sourceforge.net/.

stickfigure 2y ago

I'm surprised nobody has mentioned Joda Money yet: https://www.joda.org/joda-money/ https://www.joda.org/joda-money/ From the same person that brought us Joda Time (ie, what the java time API was based on). I've used Joda Money a lot and it's great. Honestly I prefer APIs that look like APIs and I think this trend towards inventing DSLs is a bad one. Rails works because there's a critical mass of people who have adopted what is essentially a whole new language on top of Ruby. A money library doesn't warrant a new language, it's unnecessary cognitive load. This new money library would look fine with simple constructors and method calls.

nogridbag 2y ago
I personally went with Joda money versus the Java money API mentioned above. Our needs are a bit simpler and the Joda Money API is a bit simpler to understand. Our app only deals in USD so I wrote a small utility class to help initialize Money instances so devs don't have to write: Money.of(CurrencyUnit.USD, amount) ...everywhere and do a few other things like total Money instances.
eriksencosta 2y ago
Joda is impressive and has great performance. The examples were written using the infix notation but you can just use regular method calls. For example: val price = Money.of(100, "USD") val shipping = Money.of(5, "USD") val subtotal = price.plus(shipping) val discount = Percentage.of(10) val total = subtotal.decreaseBy(discount) total.allocate(2) total.allocate(60.percent(), 40.percent())