access any key in a hash that has a default value : Hash.new « Hash « Ruby

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Ruby » Hash » Hash.new 
access any key in a hash that has a default value


if the key or value doesn't exist, accessing the hash will return the default value:

months = Hash.new"month" )

months[0]

# or:

months[72]

# or:

months[234]

 
Related examples in the same category
1. Creating Hashes
2. You can test to see if a hash is empty with empty?
3. Test how big it is with length or size
4. use new to create a hash with a default value which is otherwise just nil
5. Hash with =>
6. Hash.new with block logic
7. This lazily initialized hash maps integers to their factorials
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