length("Hello, World!")
uppercase("hello")
lowercase("HELLO")
trim(" Hello, World! ")
replace("Hello, World!", "Hello", "Hi")
arr = [1, 2, 3];
push(arr, 4)
arr = [1, 2, 3];
pop(arr)
arr = [1, 2, 3];
first(arr)
arr = [1, 2, 3];
last(arr)
content = read_file("input.txt");
print(content)
write_file("output.txt", "Hello, NabeelScript!")