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Hello, Goodbye - Elizabeth Mattijsen
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this post was submitted on 25 Jan 2026
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@lizmat those are obscure constructs in Perl where few actually understood what they are for and when people thought they they needed it, the answer was actually a no, 100% of the time.
No idea about the usage state/stats in Raku, but I feel like they shouldn’t have been carried over ;p
Well, I would agree with regards to PRE and POST. But ENTER / LEAVE are used a lot, and KEEP / UNDO most certainly as well by database oriented modules such as Red. There are 62 modules that use ENTER in the ecosystem, and 262 that use LEAVE. So definitely not obscure in Raku.
I guess one of the reasons for LEAVE being used as much, is because Raku doesn't have timely destruction (whereas Perl does).
@lizmat fair