kaba syntax ed

Table of Contents

Basics ed

Kaba is a mix of c++ and python. From c++ we stole all the functional parts, like the type system, classes and virtual functions. Python gave us syntactic sugar and block indentation.

simple hello world
func main()
    # let's greet everyone
    print("hello world")

Types and values ed

Basic types from c++: int, float, bool, char

Variables ed

local variables
func f()
    # declare a variable "i" of type int
    var i: int

    # declare "k" and give it an initial value
    var k: int = 7

    # well, we now, what type that should be...
    var l = 13        # int
    var f = 1.7       # float
    var b = true      # bool
    var name = "Bert" # string
    var c = 'A'       # char

Constants ed

global constants
const MY_CONST = 13

enums
enum
    A # will be 0
    B # will be 1
    C = 20
    D # will be 21

enum MyNamedEnum
    X

print(MyNamedEnum.X)

Dynamic arrays ed

dynamic arrays
var array: int[] = [10, 20, 30]
array.add(40)
print(array) # prints [10, 20, 30, 40]

print(array[0]) # prints 10
array[1] = -4

slices
var array = range(10) # [0, 1, ..., 9]

# slices
print(array[2:6]) # [2, 3, 4, 5]
print(array[6:])  # [6, 7, 8, 9]
print(array[:3])  # [0, 1, 2]

# counting from the end
print(array[:-2]) # [0, 1, ..., 7]

# can be written to
array[2,4] = [13, 14]

Functions ed

Parameters ed

with parameters
func some_cool_function(name: string, length: float)
    # do something

# we can have a return value
func another_function(i: int) -> int
    return 2*i

func call_the_others()
    some_cool_function("hallo", 3.1415)
    var x = another_function(7)

deeper insights:

default values
func f(a: int, b: int = 13)

func meta()
    f(1, 2)
    f(1) # equivalent to f(1, 13)

Output parameters ed

output parameters
func f(out x: int)
    x = 13

func meta()
    var x = 0
    f(x)
    print(x) # should print 13

Categories: Programmieren