EXAMPLE.md

Xper Example

Here are example using Xper to do a few simple programming problem and explain xper concept

Hello World

Classic Hello World world program not much to talk about it exactly like python or other language Hello World

print("Hello World")

FizzBuzzBazz

FizzBuzz is old and cliché introducing FizzBuzzBazz, loop from 1 to 20 and print out Fizz, Buzz and Bazz if the number is divisible by 3, 5 and 7

Here a normal implemetation:

for (num of 1..=20) {
    str = ""
    num % 3 == 0 ? str += "Fizz"
    num % 5 == 0 ? str += "Buzz"
    num % 7 == 0 ? str += "Bazz"
    print( str == "" ? num : str)
}

But this is also valid

for (num of 1..=20) {
    str = "" + {num % 3 == 0 ? "Fizz" : ""} + {num % 5 == 0 ? "Buzz" : ""} + {num % 7 == 0 ? "Bazz" : ""}
    print(str == "" ? num : str)
}

Fibonacci

Classic Fibonacci implemetation both iteratively and recursively.

Iterative

fib := (n) => {
    out = [0; 1]
    for (i of ..n) out[-1] + out[-2] >> out
}
fib(5)

Recursive

fib := (n) => n < 2 ? n : fib(n - 1) + fib(n - 2)
fib(10)

Palindrome

isPalindrome := (num) => str(num) == -str(num)
print(
    isPalindrome(1234)
    isPalindrome(121)
    isPalindrome(121)
)

Control Carry

Consider the following code

a = 10
for (,,) {
    a <= 0 ? break : a--
    print(a)
}

This would never break because the break signal is not carry out to the main loop

a = 10
for (,,) {
    a <= 0 ? break# : a--
    print(a)
}