Class: Wads::HashOfHashes

Inherits:
Object
  • Object
show all
Defined in:
lib/wads/data_structures.rb

Overview

A convenience data structure to store multiple, named sets of key/value pairs

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ HashOfHashes

Returns a new instance of HashOfHashes.



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# File 'lib/wads/data_structures.rb', line 34

def initialize
    @data = {}
end

Instance Attribute Details

#data ⇒ Object

Returns the value of attribute data.



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# File 'lib/wads/data_structures.rb', line 32

def data
  @data
end

Instance Method Details

#get(data_set_name, x) ⇒ Object

Retrieve the value for the given key x in the named data set



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# File 'lib/wads/data_structures.rb', line 53

def get(data_set_name, x)
    data_set = @data[data_set_name]
    if data_set.nil? 
        return nil
    end
    data_set[x]
end

#keys(data_set_name) ⇒ Object

Get the list of keys for the named data set



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# File 'lib/wads/data_structures.rb', line 64

def keys(data_set_name)
    data_set = @data[data_set_name]
    if data_set.nil? 
        return nil
    end
    data_set.keys
end

#set(data_set_name, x, y) ⇒ Object

Store the value y based on the key x for the named data set



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# File 'lib/wads/data_structures.rb', line 41

def set(data_set_name, x, y)
    data_set = @data[data_set_name]
    if data_set.nil? 
        data_set = {}
        @data[data_set_name] = data_set
    end
    data_set[x] = y
end