Module: HashExtensions::InstanceMethods

Defined in:
lib/eventhub/hash_extensions.rb

Overview

InstanceMethods module

Instance Method Summary collapse

Instance Method Details

#all_keys_with_path(parent = nil) ⇒ Object

get all keys with path, { ‘a’ => ‘v1’, ‘b’ => { ‘c’ => ‘v2’}}.all_keys_with_path => [‘a’,‘b.c’]



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# File 'lib/eventhub/hash_extensions.rb', line 30

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('.').to_s
    end
  end
  a.flatten
end

#get(arg) ⇒ Object

get value from provided key path e.g. hash.get(%w(event_hub plate.queue1 retry_s)) “a” => { “b” => { “c” => { “value”}}}



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# File 'lib/eventhub/hash_extensions.rb', line 12

def get(arg)
  path = arg.is_a?(String) ? arg.split('.') : arg
  path.inject(self, :[])
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 19

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.key?(key) ? h[key] :  h[key] = {} } [last] = value
  else
    key_path.inject(self) { |h, key| h.key?(key) ? h[key] :  h[key] = {} } [last] ||= value
  end
end