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Associative array/Creation: Difference between revisions
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@hash->{'key1', 'three'} = ('val1', -238.83);
==[[Ruby]]==
#a hash object that returns nil for unknown keys
hash={}
hash[666]='devil'
hash[777] # => nil
hash[666] # => 'devil'
#a hash object that returns 'unknown key' for unknown keys
hash=Hash.new('unknown key')
hash[666]='devil'
hash[777] # => 'unknown key'
hash[666] # => 'devil'
#a hash object that returns "unknown key #{key}" for unknown keys
hash=Hash.new{|h,k|h[k]="unknown key #{k}"}
hash[666]='devil'
hash[777] # => 'unknown key 777'
hash[666] # => 'devil'
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