For Loop

For-loops are statements with a loop-expression, a loop condition and a statement body that are executed as long as a specified condition is met.

For-loops have the unique attribute, unlike while-loops and do-while-loops, of having an executable loop expression, which is evaluated at the end of every loop cycle. This loop expression can be used to do repeating tasks at the end of a loop cycle, like calling a function or increasing a counter.

Syntax

for (INIT_EXPRESSION (OPTIONAL); CONDITION (OPTIONAL); LOOP_EXPRESSIONS (OPTIONAL)...) STATEMENT;

Execution Schema

• Evaluate INIT_EXPRESSION, if it exists (Only the first time).
• Check CONDITION, if it exists, before running the STATEMENT. If CONDITION is false, then the loop will be stopped!
• Run STATEMENT if CONDITION was true.
• If the loop was not stopped using return or break, evaluate LOOP_EXPRESSION after finishing the execution of STATEMENT.

Examples

// ✓ Simple for-loop with an execution counter
for (var i: num = 1; i < 10; i++) {
  call print(f"Running for the {i}. time!");
}

// ✓ Simple for-loop with two execution counters
var j: num = 0;
for (var i: num = 1; i < 10; i++, j++) {
  call print(f"i = {i}");
}
call print(f"Additional variable j = {j}"); // -> Additional variable j = 10

// X Infinite loop - Avoid this, as it results in your program freezing/running forever
for ( ; ; ) {
  call print(f"Running for the {i}. time!");
}