Initially, "collection" was chosen as sets of numbers and list of (sub-)collections should be represented as well.
Tables given as {key: number} dictionaries turn out to be much more useful than simple sets of numbers, as every number (with description given by the collection) gets a key/index to refer to.
Initially, "collection" was chosen as sets of numbers and list of (sub-)collections should be represented as well. Tables given as {key: number} dictionaries turn out to be much more useful than simple sets of numbers, as every number (with description given by the collection) gets a key/index to refer to.