Control Flow

if/elif/else, loops, and pattern matching — the branching and repetition NEKOVA gives you.

if / elif / else

task classify(n):
    if n > 0:
        return "positive"
    elif n < 0:
        return "negative"
    else:
        return "zero"

Inline ternary

let label = "adult" if age >= 18 else "minor"

while

let n = 5
while n > 0:
    show n
    n = n - 1

for … in

for item in [1, 2, 3]:
    show item

for i in range(5):
    show i

for key in {"a": 1, "b": 2}:
    show key

repeat

repeat 3:
    show "hi"

break and continue

for n in range(10):
    if n == 3:
        continue
    if n == 7:
        break
    show n

in / not in

show 3 in [1, 2, 3]        # true
show "xyz" not in "hello"  # true

match

Pattern matching against a value, with exhaustiveness checking:

task describe(status):
    match status:
        when "pending":
            return "waiting to start"
        when "active":
            return "in progress"
        when "done":
            return "finished"
        else:
            return "unknown status"

Ranges work as match arms too:

match score:
    when 90..100:
        show "A"
    when 80..89:
        show "B"
    else:
        show "C or below"

If a match block doesn't cover every case NEKOVA can statically reason about, the checker emits warning W009 rather than staying silent about it.