In 1.9 #instance_methods are Symbols, in 1.8 Strings. Always match on strings.
In 1.9 #instance_methods are Symbols, in 1.8 Strings. Always match on strings.

troygnichols/dm-types,ar-dm/ardm-types,lgierth/dm-types,datamapper/dm-types,engineyard/dm-types