Dictionaries Are Hashes

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	Ruby Way By Hal Fulton Slots : 1.0
	Table of Contents

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Use => instead of : to indicate pairings in a hash. Hash keys can be mutable objects (see rehash). Inverting a hash does not automatically group duplicates into an array; you will lose entries if there were duplicate values.

 hsh = { } hsh['key'] = 7 hsh2 = {  "A"=>65, "B"=>66 } 

Ruby supports default values for hashes.

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