Evaluate variable

There is a possibility to evaluate any variable?

Example Javascript

var boxSize = 140
var boxSpace = 5

function calcBoxSize(size) {
    return boxSize * size + boxSpace * ((size - 1) * 2);
}

for(var i = -1; ++i < 10;) {
    eval('var boxSize' + i + ' = ' + calcBoxSize(i));
}

console.log(boxSize1); // 140
console.log(boxSize2); // 290

Suggestion in Sass

$boxSize: 140px
$boxSpace: 5px

@function calcBoxSize($size)
    @return $boxSize * $size + $boxSpace * (($size - 1) * 2)

@for $c from 1 through 10
    $calc: calcBoxSize($c)
    eval('$boxSize#{$c}: #{$calc}')

// Output
// $boxSize1: 140px
// $boxSize2: 290px
...

[Anahkiasen]

eval is pretty much the one structure that is always frowned upon in all languages, Javascript, PHP, etc. Why should it be in Sass?

[lagden]

In the end…

Map solution

// Boxes vars
// -------------------------
$boxSize: 140px
$boxSpace: 5px
$boxMap: ()

// Boxes Helpers function
// -------------------------
@function calcBoxSize($size)
    @return $boxSize * $size + $boxSpace * ($size - 1) * 2

// Boxes
// -------------------------
@for $c from 1 through 10
    $boxMap: map-merge($boxMap, ($c: calcBoxSize($c))) !global

@debug map-get($boxMap, 1)
@debug map-get($boxMap, 2)
@debug map-get($boxMap, 3)