Re^9: Yet Another Program on Closures ~ Steven Lembark ~ TPRC 2025

Did you read the original quotes explaining the etymology?

see Re^3: Yet Another Program on Closures ~ Steven Lembark ~ TPRC 2025 - YouTube (UPDATE Etymology)

> ... as a porous or an open covering of the function since free variables escape to the current environment. FUNCTION acts as a closed or nonporous covering (hence the term "closure" used by Landin).

Cheers Rolf
_{(addicted to the Perl Programming Language :)

see Wikisyntax for the Monastery}

Comment on Re^9: Yet Another Program on Closures ~ Steven Lembark ~ TPRC 2025 - YouTube

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Re^10: Yet Another Program on Closures ~ Steven Lembark ~ TPRC 2025 - YouTube by ikegami (Patriarch) on Aug 04, 2025 at 21:39 UTC
I have now. The paper/quote shows that the closure uses a captured environment ("binding environment") instead of the environment that exists where the closure is called ("activation environment"). The environment of a closure is therefore fixed ("closed"). And that this is the source of the name closure. Did you read it? Cause it defines a closure in terms of what variables it can access, just like I said.	[reply]
Re^11: Yet Another Program on Closures ~ Steven Lembark ~ TPRC 2025 - YouTube by LanX (Saint) on Aug 05, 2025 at 21:25 UTC
> Did you* read it?* Obviously! Anyway, my "no mono-threads below `Re^10` because everything was already said at least twice" policy kicks in! See ya! :) Cheers Rolf _{(addicted to the Perl Programming Language :) see Wikisyntax for the Monastery}	[reply] [d/l]