Built-in Functions

print("Hello")              # Hello
print("x =", 10)            # x = 10
print("Sum:", 5 + 3)        # Sum: 8

# Single argument: 0 to n-1
for i in range(5) {
  print(i)  # 0, 1, 2, 3, 4
}

# Two arguments: start to end-1
for i in range(2, 6) {
  print(i)  # 2, 3, 4, 5
}

# String manipulation (coming soon)
let text = "Hello, JOEL"
let upper = text.upper()        # "HELLO, JOEL"
let lower = text.lower()        # "hello, joel"
let length = text.length()       # 12
let split = text.split(",")     # ["Hello", " JOEL"]

# Math operations (coming soon)
let max_val = math.max(10, 20)      # 20
let min_val = math.min(10, 20)      # 10
let abs_val = math.abs(-5)         # 5
let sqrt_val = math.sqrt(16)       # 4.0

let list = [1, 2, 3]

list.append(4)        # [1, 2, 3, 4]
list.prepend(0)       # [0, 1, 2, 3, 4]
let len = list.length()  # 4
let first = list.first() # 1
let last = list.last()   # 4

let map = {"a": 1, "b": 2}

map.has("a")          # true
map.keys()            # ["a", "b"]
map.values()          # [1, 2]
map.size()            # 2

[Interpreted]

fn main() {
  # Print
  print("Counting:")
  
  # Range
  for i in range(0, 5) {
    print("  ", i)
  }
  
  # Output:
  # Counting:
  #   0
  #   1
  #   2
  #   3
  #   4
}

main()