Re: Boolean operators without commutators vs. ALL/ANY

On Fri, Jun 17, 2011 at 10:20:04AM -0400, Alvaro Herrera wrote:
> Excerpts from Florian Pflug's message of vie jun 17 10:03:56 -0400 2011:
>
> > How is that worse than the situation with "=~" and "~="?
>
> With =~ it is to the right, with ~= it is to the left.

To throw my user opinion into this ring (as a long time user of regexes
in many different systems) I've always taken the ~ to be short hand for
the 'approximately' notation (a squiggly equals) which has good semantic
match in my mind: a regex match is sort of a fuzzy equality. With that
model, the suggested pair is fairly mnemonic - the 'fuzzy' part i(the
pattern) is next to the squiggles, the 'concrete' part goes by the
equals.

> I have sometimes needed to look up which is which on ~ and ~~.

which has no such directionality, so yeah, no hinting there.

Ross
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