Class: Hash

Inherits:
Object
  • Object
show all
Defined in:
lib/fat_core/hash.rb

Instance Method Summary collapse

Instance Method Details

#delete_with_value(v) ⇒ Object

Remove from the hash all keys that have values == to given value or that include the given value if the hash has an Enumerable for a value

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# File 'lib/fat_core/hash.rb', line 16

def delete_with_value(v)
  keys_with_value(v).each do |k|
    delete(k)
  end
  self
end

#keys_with_value(val) ⇒ Object

Return all keys in hash that have a value == to the given value or have an Enumerable value that includes the given value.

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# File 'lib/fat_core/hash.rb', line 4

def keys_with_value(val)
  result = []
  each_pair do |k, v|
    if self[k] == val || (v.respond_to?(:include?) && v.include?(val))
      result << k
    end
  end
  result
end

#remap_keys(key_map = {}) ⇒ Object

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# File 'lib/fat_core/hash.rb', line 23

def remap_keys(key_map = {})
  new_hash = {}
  each_pair do |key, val|
    if key_map.has_key?(key)
      new_hash[key_map[key]] = val
    else
      new_hash[key] = val
    end
  end
  new_hash
end