Elance Exams Answers PDF file

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Download PDF file of elance Zoho Creator Exam Answers
elance-zoho-creator-exam.pdf

The index_by method is...

not a method in standard Ruby on Rails
an ActiveRecord migration helper method for creating database table indexes
a standard ruby method on Array for creating a Hash index from an Array with keys computed by the block argument
an ActiveRecord helper method for fetching results in groups of size specified by the argument
a Ruby on Rails method to create a Hash from an Array with keys computed by the block argument
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