Patch a list of Objects into O. Patches from left to right, first items get completed by the next ones (last-in completes).
O
to start with
to patch
(?='flat') 'deep' to do it deeply
'flat'
(?=BuiltIn) types not to merge
BuiltIn
(?=never) types of O to be replaced with ones of O1
never
O1
Object
Patch a list of Objects into
O. Patches from left to right, first items get completed by the next ones (last-in completes).