Commits on Oct 4, 2015

1. helper/schema: Default hashing function for sets …

   A common issue with new resource implementations is not considering parts
   of a complex structure that's used inside a set, which causes quirky
   behavior.
   
   The schema helper has enough information to provide a default reasonable
   implementation of a set function that includes all non-computed attributes
   in a deterministic way. Here we implement such a function and use it
   when no explicit hashing function is provided.
   
   In order to achieve this we encapsulate the construction of the zero
   value for a schema in a new method schema.ZeroValue, which allows us to
   put the fallback logic to the new default function in a single spot.
   It is no longer valid to use &Set{F: schema.Set} and all uses of that
   construct should be replaced with schema.ZeroValue().(*Set) .

   

   apparentlymart committed Oct 4, 2015
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