bloom-lang/bud — Issue #252: notin incorrect on empty block
Author: jhellerstein
Created: 2011-10-10 07:57:45+00:00
State: open

notin predicates without a block should implicitly compare items attribute-by-attribute, by position, and return items that are not also in the argument collection:

```ruby
outsie <= foo.notin(bar)
```
should return items from foo that are not in bar.