Control flow

if

hp := 25
if hp <= 0 {
    print("dead")
} else if hp < 30 {
    print("low")
} else {
    print("ok")
}

low

The condition has to be a bool. Write if count != 0, not if count.

while

n := 1
while n < 100 {
    n *= 2
}
print(n)

128

while true { ... } runs until a break.

for

.. stops before the end. to includes it:

for i in 0..3 {
    print("a{i}")
}
for i in 1 to 3 {
    print("b{i}")
}

a0
a1
a2
b1
b2
b3

for also counts through chars:

word := ""
for c in 'a' to 'e' {
    word += "{c}"
}
print(word)

abcde

The end is worked out once, before the loop starts. If the start is already past the end, the loop doesn't run.

The counter belongs to the loop: it can't be replaced with := or destroyed.

break and continue

break leaves the loop. continue skips to the next round:

for i in 1 to 10 {
    if i == 3 { continue }
    if i == 6 { break }
    print(i)
}

1
2
4
5

For choosing between many values, see switch.