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11 lines of code shouldn't be a package.
you should see the "is_odd" package...
it's like, return (num%2)? true:false
at which point do you blame the language for not implementing it natively?
Erm … What more native than
number % 2do you want to have it?2.is_even()(I don't know, if this is possible in JS.)
Let’s call the number variable just
x, you then have literal math (Euclidean division) if you ignore===instead of=for equals.This can’t get better or more native than “just math”. This is the whole code you need to detect if a number is even. I wouldn’t even call it “code”.
If you remove whitespaces and ignore the type you end up with x%2==0 which is 6 characters long and a fully valid
ifclause. No magic involved, no abstraction, no weird function calls on integers …I see that in modern JS this type of coding is a trend, but you can’t tell me you want to replace 6 characters with an own module or a package. :)
No, I want that in the std lib. Yes, it would just call
x % 2 == 0underneath. But the advantage is readability. I'm in principle aware thatx % 2 == 0is true when the number is even, but I need it seldomly enough that I do still need to think about it for a second before I know for sure. I don't need to think aboutx.is_even(). And the readability is what I want natively, i.e. in the std lib.It being in the std lib would also sidestep your concerns about security or the function call having unknown side effects.
I mean, does any language implement
is_odd()natively? Doesn't everyone implement modulus and pretty much assumes that you remember modulus from elementary and can infer that even numbers are those wherex % 2 == 0.at 200k weekly downloads, i blame npm for allowing it...
https://www.npmjs.com/package/is-even
https://www.npmjs.com/package/undefined
What do you think about this package? 14,000 weekly downloads...
now i understand why people would call code "beautiful" and "elegant"
...
this here is a true work of art
Isn’t %2 already native?
(BTW this thing failed JavaScript so hard ECMA immediately included it in that year’s standard)