[swift-evolution] divisible-by operator

[Milos Rankovic]

Checking for divisibility is very common:

    21 % 3 == 0 // true

In fact, this is such a common use of the `%` operator that the `== 0` side of the expression seems distracting in this use case. For quite a while now, I’ve been using a custom operator for this, which is steadily growing on me:

    21 %== 3 // true

… which also allows me to overload it for sequences:

    21 %== [7, 3] // true

(If I’m inadvertently misusing this mailing list to share such a minor idea, please tell me off so that I can learn not to do it again!)

milos
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