Class: Hash

Inherits:
Object
  • Object
show all
Defined in:
lib/tr8n_core/ext/hash.rb

Overview

– Copyright © 2015 Translation Exchange Inc. translationexchange.com

_______                  _       _   _             ______          _

|__ __| | | | | (_) | __| | |

| |_ __ __ _ _ __  ___| | __ _| |_ _  ___  _ __ | |__  __  _____| |__   __ _ _ __   __ _  ___
| | '__/ _` | '_ \/ __| |/ _` | __| |/ _ \| '_ \|  __| \ \/ / __| '_ \ / _` | '_ \ / _` |/ _ \
| | | | (_| | | | \__ \ | (_| | |_| | (_) | | | | |____ >  < (__| | | | (_| | | | | (_| |  __/
|_|_|  \__,_|_| |_|___/_|\__,_|\__|_|\___/|_| |_|______/_/\_\___|_| |_|\__,_|_| |_|\__, |\___|
                                                                                    __/ |
                                                                                   |___/

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ++

Instance Method Summary collapse

Instance Method Details

#rmerge(other_hash) ⇒ Object

Recursive version of Hash#merge

Compared with Hash#merge!, this method supports nested hashes. When both hsh and other_hash contains an entry with the same key, it merges and returns the values from both arrays.

Compared with Hash#merge, this method provides a different approch for merging nasted hashes. If the value of a given key is an Hash and both other_hash abd +hsh includes the same key, the value is merged instead replaced with other_hash value.

h1 = {"a" => 100, "b" => 200, "c" => {"c1" => 12, "c2" => 14}}
h2 = {"b" => 254, "c" => 300, "c" => {"c1" => 16, "c3" => 94}}
h1.rmerge(h2)    #=> {"a" => 100, "b" => 254, "c" => {"c1" => 16, "c2" => 14, "c3" => 94}}

Simply using Hash#merge would return

h1.merge(h2)     #=> {"a" => 100, "b" = >254, "c" => {"c1" => 16, "c3" => 94}}



92
93
94
95
96
97
 
# File 'lib/tr8n_core/ext/hash.rb', line 92

def rmerge(other_hash)
  r = {}
  merge(other_hash)  do |key, oldval, newval| 
    r[key] = oldval.class == self.class ? oldval.rmerge(newval) : newval
  end
end

#rmerge!(other_hash) ⇒ Object

Recursive version of Hash#merge!

Adds the contents of other_hash to hsh, merging entries in hsh with duplicate keys with those from other_hash.

Compared with Hash#merge!, this method supports nested hashes. When both hsh and other_hash contains an entry with the same key, it merges and returns the values from both arrays.

h1 = {"a" => 100, "b" => 200, "c" => {"c1" => 12, "c2" => 14}}
h2 = {"b" => 254, "c" => 300, "c" => {"c1" => 16, "c3" => 94}}
h1.rmerge!(h2)   #=> {"a" => 100, "b" => 254, "c" => {"c1" => 16, "c2" => 14, "c3" => 94}}

Simply using Hash#merge! would return

h1.merge!(h2)    #=> {"a" => 100, "b" = >254, "c" => {"c1" => 16, "c3" => 94}}



65
66
67
68
69
 
# File 'lib/tr8n_core/ext/hash.rb', line 65

def rmerge!(other_hash)
  merge!(other_hash) do |key, oldval, newval| 
      oldval.class == self.class ? oldval.rmerge!(newval) : newval
  end
end