Some simple array/obj-operations I often need:
- is, isArray
- from, arrayFrom
- fromString, splitString
- append
- appendUnique
- prepend
- remove
- buildIndex
- buildIndexUnique
- intersperse
- pushAll
- pushAllUnique
- pushUnique
- ensure
- nullForEmpty
- pairs
- pairsWrap
- removeFirst
- first
- last