this post was submitted on 08 Mar 2024
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[–] [email protected] 73 points 8 months ago (6 children)

better to go that way than this (note the weekly downloads)

[–] [email protected] 56 points 8 months ago* (last edited 8 months ago) (3 children)

The best part is the dependency on the function is_odd.

[–] [email protected] 44 points 8 months ago* (last edited 8 months ago) (1 children)

Which itself has a dependency of the function is_number.

[–] [email protected] 5 points 8 months ago (2 children)
[–] [email protected] 6 points 8 months ago* (last edited 8 months ago)

Can't even or can't odd? If only there was a way to find out =/

[–] [email protected] 1 points 8 months ago

The efficient use of memory is an efficient use of memory.

[–] [email protected] 4 points 8 months ago

dear Lord lmfao

[–] [email protected] 2 points 7 months ago

That is one deep rabbit hole.

[–] [email protected] 27 points 8 months ago

If I was a JS programmer, I'd just write a bash script to download it every week for fun.

[–] [email protected] 12 points 8 months ago (2 children)

300,000 every week... is this really a feature not built into Java Script?

[–] [email protected] 32 points 8 months ago* (last edited 8 months ago) (1 children)

is this really a feature not built into Java Script?

x % 2 == 0

[–] [email protected] 28 points 8 months ago (3 children)
(+x) % 2 == 0

If you forget for a second it's Javascript, the language will turn back and bite you.

[–] [email protected] 8 points 8 months ago

(+x) % 2 === 0

[–] [email protected] 5 points 8 months ago (3 children)

I am not good friends with js, what did I miss?

[–] [email protected] 14 points 8 months ago (3 children)

JS is a language where [1,2,11].sort() returns [1,11,2].

And if you use a variable instead of a bare array, half the functions are side-effectful, as determined by coin toss.

And if you try declaring that variable with new Array(3).map() then it will ignore all 3 indices, because undefined is real enough to be enumerated, but not real enough to be iterated, because, and I cannot overstress the importance of this principle in Javascript, go fuck yourself. Go fuck yourself is why.

[–] [email protected] 5 points 8 months ago

typeof(null) == 'object'

Because some people think planning an entirely new language should take less than 2 weeks. 10 days, in this case.

See wat for more.

[–] [email protected] 5 points 8 months ago (2 children)

Array(3) doesn't create [undefined, undefined, undefined, ]; it creates [/* hole */, /* hole */, /* hole */, ]. The holes don't set any property on the array whatsoever, so they are skipped when iterating. How this makes sense, I can't tell you.

[–] [email protected] 4 points 8 months ago

Yet the array contains exactly three nothings.

It's like a zen koan.

[–] [email protected] 2 points 8 months ago

Time is a flat circle

[–] [email protected] 2 points 7 months ago (1 children)

We wrote it wrong on purpose, as a joke.

[–] [email protected] 1 points 7 months ago

The Wimp Lo doctrine is a valid theory for why JS is Like That.

If there's two ways to do something, JS picks all three.

[–] [email protected] 7 points 8 months ago (1 children)

This evaluates to NaN for some reason:

'10' % 0

Since JS doesn't really differentiate strings from numbers, except on the places it does, it makes sense to make sure you are working with numbers.

[–] [email protected] 2 points 8 months ago* (last edited 8 months ago)

Oh right that. I guess I was visualizing a scenario where you already checked for it being a number, such as a Number.isInteger(x)

also, that suprises me a lot, you'd think this is one of the places where it treats stuff as numbers

[–] [email protected] 6 points 8 months ago (1 children)

Not a JS dev either but ===.

Not really sure what the (+x) is about

[–] [email protected] 1 points 8 months ago (1 children)

the remainder operator should return a number or a NaN right? do we actually need the triple here?

[–] [email protected] 2 points 8 months ago* (last edited 8 months ago) (1 children)

Not really. But with JS it's better safe than sorry.

The GP's addition is unnecessary, but I fully support anyone that decides to do it.

[–] [email protected] 2 points 8 months ago
[–] [email protected] 3 points 8 months ago (1 children)
[–] [email protected] 6 points 8 months ago (1 children)
[–] [email protected] 9 points 8 months ago (1 children)

what a wonderful and beautiful language. i’m so glad i asked

[–] [email protected] 1 points 8 months ago

And so wonderfully similar to the way that symbol is used in other languages as well. Gosh darn it I love JavaScript

[–] [email protected] 8 points 8 months ago

the is_even package does not provide much worth indeed because it simply negates is_odd and thereby all its benefit.

It's dependency is_odd on the other hand provides at least some additional checks (it also checks if the value is a valid integer below the max int value)

And while I would indeed see uses for such methods (especially with the other checks, no simple oneliners) in some cases, especially in testing: This is stuff you write yourself, throw it in a e.g. NumberUtils class and everything is fine. You do never depend on an external library for that. The benefit (not spending a few seconds to write it) does not outweigh any of the drawbacks that come with external libraries.