Flatten Array in Crystal
Take a nested list and return a single list with all values except nil/null
exercism fetch crystal flatten-array
Take a nested list and return a single flattened list with all values except nil/null.
The challenge is to write a function that accepts an arbitrarily-deep nested list-like structure and returns a flattened structure without any nil/null values.
Follow the setup instructions for Crystal here:
More help installing can be found here:
Making the Test Suit Pass
Execute the tests with:
$ crystal spec
In each test suite all but the first test have been skipped.
Once you get a test passing, you can unskip the next one by changing
Interview Question https://reference.wolfram.com/language/ref/Flatten.html
Submitting Incomplete Solutions
It's possible to submit an incomplete solution so you can see how others have completed the exercise.