gistfile1.txt

I like the :symbol.comparison syntax, but it looks like
I can't use DataMapper and MongoMapper in the same project. :(

gistfile2.rb

>> require 'dm-core'
=> true
>> require 'mongo_mapper'
=> true
>> :id.lte
=> #<MongoMapper::FinderOperator:0x1022ddd10 @field=:id, @operator="$lte">

gistfile3.rb

>> require 'mongo_mapper'
=> true
>> require 'dm-core'
=> ["Infinity"] # Thank you ActiveSupport?
>> :id.lte
=> #<DataMapper::Query::Operator @target=:id @operator=:lte>