[gitgud]

Sorry I should have been more clear. Incrementing every element in an array is much less useful than ".map()" which can execute a function on every element.

It just seems like a weirdly specific syntactic sugar... which is a "language smell"... to me

[schveiguy]

You can use arrays as if they were individual operands, and it will expand out the loop and apply the expression to all the values (and can use optimization/vector tricks if posssible).

e.g.:

arr1[] += arr2[] / 10.0 + 5;

TBH, I don't use this feature much, because I work with ranges more than arrays, which do not have this ability. This feature predates ranges (and the std.algorithm.map function, which can do what you say as well).

[destructionator]

Well you can also just call .map if you want. The nice thing about the [] operation is the compiler can optimize it more heavily since it is restricted to simpler instructions.