What’s there to say? It works the same way as `zip` does for an iterator over a `Vec`. So if you understand `zip` as applied to an iterator over `Vec`, then you might understand `zip` applied to `Option`.
In other words:
Y is clear if you already understand X. Like how returning early is simple to understand if you understand if-blocks.
That’s the problem with replying to these kinds of questions: the response is so short and context-dependent that it can look curt.
EDIT: the first code is also inelegant in that it effectively checks if both values are `None` twice in the `Some` case: once in the if-condition and once in `unwrap()` (the check that panics if you try to unwrap a `None`).
Yes, it looks like modern Prolog systems using ".pl". I checked Ciao, GNU Prolog (which recognizes ".pl" and ".pro"), SICStus Prolog (also ".pl" and .pro"), SWI-Prolog, and B-Prolog.
The documentation for SWI-Prolog 5.10 (2010) even says "Tradition calls for .pl, but conflicts with Perl force the use of another extension on systems where extensions have global meaning, such as MS-Windows. On such systems .pro is the common alternative." https://www.swi-prolog.org/download/stable/doc/SWI-Prolog-5.....
Thing is, I can't confirm that tradition predates Perl 4 - call it 1993.
I think it's even more explicit on p25 where it says "A module name can have the form either file.ext or just file. In the latter case the extension 'PL' is implied."
> Even something as simple as prepending the site name in ROT13 to a reused password greatly reduces your exposure to the sort of background infosec threat radiation that's like 99.99% of the threat model for most people
If one goes with the infosec advice that you should calculate the entropy of passwords based on the assumption that the attacker knows the password scheme, then this password scheme provides zero entropy. So if there is zero cost for the cracker to pwn you as well as all the others that don’t have this kind of leetspeak obfuscation then you’re still pwned.
Why would a government have anything to do with this?
But if you insist: the best thing a government can do is to have some civic service which any kind of person can be called to do (not just the unenemployed, the retired, or other such people that the govt. wants to “keep busy”). There’s nothing that bonds more (between strangers) than reluctantly having to do some task because either Nature or Government is forcing you to. ;)
Or just facilitate the creation and running of volunteer groups.
