Module: HashExtensions::InstanceMethods

Defined in:
lib/eventhub/hash_extensions.rb

Instance Method Summary collapse

Instance Method Details

#all_keys_with_path(parent = nil) ⇒ Object

get all keys path, { ‘a’ => ‘value1’, ‘b’ => { ‘c’ => ‘value2’}}.all_keys_with_path => [‘a’,‘b.c’]



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# File 'lib/eventhub/hash_extensions.rb', line 28

def all_keys_with_path(parent=nil)
  a = []
  each do |k,v|
    if v.is_a?(Hash)
      a << v.all_keys_with_path([parent,k].compact.join('.'))
    else
      a << "#{[parent,k].compact.join(".")}"
    end
  end
  a.flatten
end

#get(arg) ⇒ Object

“a” => { “b” => { “c” => { “value”}}}



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# File 'lib/eventhub/hash_extensions.rb', line 9

def get(arg)
  path = arg.is_a?(String) ? arg.split('.') : arg
  path.inject(self,:[])
rescue NoMethodError 
  return nil
end

#set(arg, value, overwrite = true) ⇒ Object

set value from provided key path, e.h. hash.set(‘a.b.c’,‘new value’) if overwrite is false, value will be set if it was nil previously



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# File 'lib/eventhub/hash_extensions.rb', line 18

def set(arg,value,overwrite=true)
  *key_path, last = arg.is_a?(String) ? arg.split(".") : arg
  if overwrite
    key_path.inject(self) { |h,key| h.has_key?(key) ? h[key] :  h[key]={}} [last] = value 
  else
    key_path.inject(self) { |h,key| h.has_key?(key) ? h[key] :  h[key]={}} [last] ||= value
  end  
end