Loops

For syntax

Base syntax

Example code:

for(var = 0; var < n; var = var + 1) {
    ## Your code
}

This syntax is the base syntax in informatic, it uses first a set expression, here var = 0, a comparate expression, here var < n, and an advance expression at the end of each iteration, here var = var + 1

It will run your code while the comparate expression returns true.

Iterator syntax

Example code:

for(var:iter) {
    ## Your code
}

This syntax can be used when iter is for an example an array. If it is an array, it will result in looping on every object of the array.

While

Example code:

while(true) {
   ## Your code
}

So this syntax is not implemented. Your code will run while the expression gives you a true, here true.

Break / Continue

Break

• Base Break

You can launch a base break by doing break. This will break the loop in which you are

For an example, this code:

for(i = 0; i < 5; i = i + 1) {
   if (i == 2) {
       break;
   }
   print(i);
}

returns 0 1

• Multiple Breaks

As a dev, you may have already tryed to do double or triple break, but to do this, there is a syntax in Drom to do it : you can do break(x) to break x times. But you can not break with a variable, it is always a known number like 1,2,3…

This means that if you have two loops :

for (i = 0; i < x; i = i + 1) {
   for (j = 0; j < y; j = j + 1) {
       break(2)
   }
}

The break(2) will break both loops

Continue

• Base Continue

You can launch a base continue by doing continue. This will stop the actual iteration of the loop in which you are

For an example, this code:

for(i = 0; i < 5; i = i + 1) {
   if (i == 2) {
       continue;
   }
   print(i);
}

returns 0 1 3 4

• Multiple Continues

Like the break, you can give parameters to the continue. The first parameter is the id of the loop. For an example if you set the first parameter x to 5, this will break 4 loops and will continue the 5th. The second parameter is the number of jump, this means the count of times you will execute the advance expression in a for loop before continuing normally.

For an example,

for(i = 0; i < 5; i = i + 1) {
   if (i == 2) {
       continue(1,2);
   }
   print(i);
}

returns 0 1 4. Here, it has jumped two times the loop while launching i = i + 1.