For

for loops are the most concise loop construct.

For for loops, parenthesis are required, this is described in the Control Flow section.

There syntax is highly resemblant of their C counterpart:

for (var i := 0; i < 5; i++) {
    print "i is: #{i}"
}

The syntax of the for loop is:

for (<initalization>; <condition>; <afterthought>) {
    [code block]
}

Essentially the way this works is:

execute initalization
while condition evaluates to true
    execute code block
    execute afterthought

The output of the first for example would be:

i is: 0
i is: 1
i is: 2
i is: 3
i is: 4
i is: 5

This is because the variable i is initialized to 0 at the beginning. Then, because i is less then 5, it will keep running the code block until i is not less than 5. This happens because the i++ increases i everytime, after, the code block (i.e. the print) is executed.

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