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Now that we have support for string-based arithmetic, perhaps we might want to also implement array-based arithmetic? This issue will discuss possible syntax ideas that we could pursue.

Proposal # 1

This approach is commonly used in functional languages, so it might also be a natural fit here. Define a variable name to describe each element in the array, and then follow it with a mathematical expression to apply with each element in the array.

@[ELEMENT -> EXPR, ARRAY EXPR]

Examples

Example # 1

let array = [1 2 3]
for result in @[x -> x * x, array]
    echo $result
end

Output # 1

1
4
9

Example # 2

let array = [1 2 3]
let value = 3
for result in @[x -> x * value, array]
    echo $result
end

Output # 2

3
6
9