undefined | Better HN

0 pointsadamddev14y ago0 comments

Or how about TCO (tail-call optimization)? Please pretty please!

0 comments

TCO is something that specific JS engines need to implement. It is implemented in JSC (Safari), but not in V8 or SpiderMonkey. Also see https://v8.dev/blog/modern-javascript#proper-tail-calls.

As this is an engine feature rather than a spec thing, there is nothing me (or any other TC39 delegate) can do.

adamddev1OP4y ago

Oh yes, I see, that's true. Thanks for the explanation.

hajile4y ago

Proper tail calls are ALREADY part of the spec.

Google and Mozilla simply chose to ignore the spec.

Scarbutt4y ago

More like Google, Mozilla just waits to see if Google is going to implement it since they can't think for themselves.

adamddev1OP4y ago

It would be so nice to have it though! It could do a lot popularize recursive problem-solving and function writing, without having to go into modifying these functions to make them stack-safe.

j / k navigate · click thread line to collapse

0 comments

lucacasonato4y ago

TCO is something that specific JS engines need to implement. It is implemented in JSC (Safari), but not in V8 or SpiderMonkey. Also see https://v8.dev/blog/modern-javascript#proper-tail-calls.

As this is an engine feature rather than a spec thing, there is nothing me (or any other TC39 delegate) can do.

adamddev1OP4y ago

Oh yes, I see, that's true. Thanks for the explanation.

hajile4y ago

Proper tail calls are ALREADY part of the spec.

Google and Mozilla simply chose to ignore the spec.

Scarbutt4y ago

More like Google, Mozilla just waits to see if Google is going to implement it since they can't think for themselves.

adamddev1OP4y ago

It would be so nice to have it though! It could do a lot popularize recursive problem-solving and function writing, without having to go into modifying these functions to make them stack-safe.

j / k navigate · click thread line to collapse