Coconut

# Fibonacci sequence using pattern matching
def fib(0) = 0
def fib(1) = 1
def fib(n) = fib(n-1) + fib(n-2)

# List comprehension with pipeline operator
result = range(10) |> map$(fib) |> list

# Print results
print("Fibonacci sequence:", result)

# Infinite list using iterators
def fibs() = iterate(
    (0, 1),
    (a, b) -> (b, a + b)
) |> map$((x) -> x[0])

# Take first 15 Fibonacci numbers
first_15 = fibs() |> take$(15) |> list
print("First 15:", first_15)