undefined | Better HN

0 pointsbarmic124mo ago0 comments

one issue is it’s not a type alias but a type encapsulation. This have a cost at runtime, it’s not like in some functionnals languages a non cost abstraction.

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2 comments · 2 top-level

vips7L4mo ago

Correctness is more important than runtime costs.

LelouBil4mo ago

In languages like kotlin and rust you can have a type encapsulation like this that does not exist at runtime

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