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kotlinlang

Also, how often are you planning to call `main` explicitly?

I mean how often are you calling `main` _directly from Kotlin code_

That's the only time when allowing or disallowing varargs would affect it

If you want to you can, but I'd recommend sticking with the idiomatic form

The idiomatic way to write it in Java is `public static void main(String[] args)`. `fun main(args: Array&lt;String&gt;)` is the direct translation of that into Kotlin. It's also how the docs define `main` <https://play.kotlinlang.org/byExample/01_introduction/01_Hello%20world>

Idioms from there can sometimes carry over

For sure, I just wanna know what you think is more idiomatic about this one language feature instead of this other language feature

I'm not deciding what is idiomatic, I'm just saying what it the more common version

That seems different from saying “X is idiomatic [and therefore, Y is not]“, doesn’t it?

I mean I was taking "idiomatic" to mean commonly used and accepted

I think the first form is by far more common than the varargs form

It also makes searching for main easier for people who are new to your project

I would say `Array` is much easier to understand that vararg. 
"Hey it's an array of arguments"
Vs
"Hey it's vararg? Hmm whats the type of it? Is it list? Array? Never mind, at least it says several args, so an Iterable, aha!"