Course of Raku / Advanced / Subroutines / Multiple dispatch / Exercises / Bulk pricing

Solution: Bulk pricing

Here is a possible solution to the task.

Code

multi sub price(Int $qty where $qty >= 10) { say 'bulk price' }
multi sub price(Int $qty)                  { say 'normal price' }

price(3);
price(25);

🦋 You can find the source code in the file bulk-pricing.raku.

Output

normal price
bulk price

Comments

The first candidate has a where clause that only accepts quantities of 10 or more, so the call price(25) is dispatched to it.
The second candidate has no condition and acts as the catch-all, so price(3) goes there.

← Bulk pricing | Absolute value →