Control Flow¶

if / elif / else¶

x = 15

if x > 20 {
    write("big")
} elif x > 10 {
    write("medium")
} else {
    write("small")
}

elif and else are optional.
There is no limit to the number of elif branches.
Braces { } are always required, even for single-statement blocks.

while¶

Repeats a block as long as the condition is true:

i = 0
while i < 5 {
    write(i)
    i = i + 1
}

for — range loop¶

Iterates from start to end inclusive, incrementing by 1:

for i = 1 to 10 {
    write(i)
}

for — for-each loop¶

Iterates over the elements of a list, the characters of a string, or the keys of a dictionary:

# List
fruits = ["apple", "banana", "cherry"]
for fruit in fruits {
    write(fruit)
}

# String (character by character)
for ch in "hello" {
    write(ch)
}

# Dictionary (iterates over keys)
for key in {"a": 1, "b": 2} {
    write(key)
}

break¶

Exits the innermost loop immediately:

for i = 1 to 10 {
    if i == 5 { break }
    write(i)
}
# prints 1 2 3 4

continue¶

Skips the rest of the current iteration and moves to the next:

for i = 1 to 10 {
    if i == 3 { continue }
    write(i)
}
# prints 1 2 4 5 6 7 8 9 10

pass¶

A no-op placeholder for empty blocks. Useful when a block is syntactically required but you have nothing to put in it yet:

if true {
    pass
}