ChuzzleKit

A chuzzled object is nil if it is falsy, otherwise it has its falsy parts removed.

For example:

• @"".chuzzle is nil
• Also @" ".chuzzle is nil
• And @"\r\t".chuzzle is nil
• @" 2 ".chuzzle is @"2"
• @[].chuzzle is nil
• @[@"", @1].chuzzle is @[@1]
• [NSNull null].chuzzle is nil
• @{}.chuzzle is nil
• @{@1: @""}.chuzzle is nil
• @{@1: @"", @2: @" 2 "}.chuzzle is @{@2: @"2"}

Mutable Chuzzling

Chuzzling occurs in-place, as far as it can. If a nil would be the chuzzled result the mutable version becomes the empty equivalent, and the return is nil.