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I agree,
~> and
-> are just too similar.

Depending on the font (and you can not always choose the one you like, especially online), you really have to look hard. I pretty much guarantee that code audits as well as helping out on SoPW will get a lot harder.

As for the typing effort, a character more or less really doesn't matter. Those of us who use non-english keyboards (so, most of us really) already have a hard time coding Perl and other programming languages. Some examples from my german keyboard:

  • ~ is (Alt Gr)(+)
  • \ is (Alt Gr)()
  • { is (Alt Gr)(7)
  • [ is (Alt Gr)(8)

In effect, a lot of the "standard" metacharacters require awkward right-hand-only acrobatics. I thought about using an english/american keyboard, but since i also require german umlauts that would just shift the problem. Just changing the keyboard layout in software is also a bit awkward, since then the printing on the keys does not match what i type (which i find rather confusing).

In short, i don't care if i have to type two or three characters, since something like ?-> is easier to read and harder to overlook (and in this case actually easier to type on my german keyboard as well).

And, from my personal view, i always associate ~ operations with some kind of regular expression stuff, whereas ? does not.

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In reply to Re^3: What operator should perl5porters use for safe dereferencing? by cavac
in thread What operator should perl5porters use for safe dereferencing? by de-merphq

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