Using Pattern Matching in Ruby to act based on array contents
The following piece of code is inspired by something I wrote the other day. I cannot share the exact piece of code or the content, but I liked the syntax so I played a bit with it here.
Matching against array being empty or not
You can use `in []` to match if the array is empty. And you can use `in [*]` to match when an array has elements.
You can combine `in` with `if` and have something like: `in [*] if <condition>`
Example of using pattern matching to check empty/non-empty arrays
Please note the results of using `in []` and `in [*]` with empty
Remember that `[] in []` will return true and use `case in` with checking about empty first:
Checking about being empty first
Using pattern matching with values of elements inside the array
Pattern matching can also be used in this way: to check if there are any elements with 0 or nil values inside the array:
Checking if any elements are of a specific type and values
