what are some practical cases of inline classes though Doesn kotlinlang #announcements

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Title

h

Hamza

10/30/2018, 12:58 AM

what are some practical cases of inline classes though? Doesn’t typealias already kinda do what inline classes do

h

hudsonb

10/30/2018, 1:10 AM

Unsigned values, units

👍 1

m

Mike

10/30/2018, 1:23 AM

Refer to docs https://kotlinlang.org/docs/reference/inline-classes.html#inline-classes-vs-type-aliases

However, the crucial difference is that type aliases are assignment-compatible with their underlying type (and with other type aliases with the same underlying type), while inline classes are not.

typealias MoneyTA = BigDecimal inline class MoneyIC(val BigDecimal) I can pass a BigDecimal to a function that takes MoneyTA. I CAN’T pass BigDecimal to a function that takes MoneyIC. Bottom-line: inline classes provide for stronger typing of wrapped class.

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