I thought you had to manually mark the method (and/or the recur site) for scala ... | Hacker News

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		chii on Aug 8, 2017 \| parent \| context \| favorite \| on: Dijkstra was right – recursion should not be diffi... I thought you had to manually mark the method (and/or the recur site) for scala to do tail call optimisations.

andrioni on Aug 8, 2017 [–]

It does the optimization by default, the annotation is to ensure it raises a compilation error if it actually fails to optimize.

lomnakkus on Aug 9, 2017 | [–]

Indeed, and it should be noted that it's quite limited in when it can actually apply the optimization, i.e. self-recursion only (I believe).

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