Loop

• While
• Do-while
• For
• Break
• Continue

While Loop

i := 0;
while i < 10 {
	i++
}

Do-while Loop

i := 10
do {
	i -= 2
} while (i > 0)

For Loop

YJLO Script provides a convenient for statement to loop through a block of code a number of times.
The for statement format is:

for [variable name] in [range] by [increment value] { 
	/* Clause */ 
}

For example:

for i in 3...8 by 2 {
	print( i )
}

OUTPUT:

3
5
7

[increment value] can be negative, and [range] should be a decreasing range in such case. For example,

for i in 5...3 by -1 {
	print( i )
}

OUTPUT:

5
4
3

The by [increment value] part can be omitted, and the default increment value is 1.

for i in 5...8 {
	print( i )
}

OUTPUT:

5
6
7
8

[range] can be half opened. Use ..< for half-open increasing range, and ..> for half-open decreasing range. For example,

for i in 5..<8 {
	print( i )
}

OUTPUT:

5
6
7

Values in [range] and [increment value] can be any valid expression that is evaluated to a number.

a := 3;
for i in a..<a**2 by a-1 {
	print( i )
}

OUTPUT:

3
5
7

In addition, looping through a list is as simple as:

for e in ['a', 'b', 'c'] {
	print(e)
}

OUTPUT:

a
b
c

Similarly, you can also loop through an Array:

for e in Array(['a', 'b', 'c']) {
	print(e)
}

Break

The break statement "jumps out" of a loop.

a := 0
while true {
    if ++a > 3 {
        break
    }
    print( a )
}

OUTPUT:

1
2
3

Continue

The continue statement "jumps over" one iteration in the loop.

for a in 0..<10 {
	if ++a % 2 == 0 {
		continue
	}
	print( a )
}

OUTPUT:

1
3
5
7
9