Module: ExtendHash

Included in:
Hash
Defined in:
lib/net/dns/rr.rb,
lib/net/dns/resolver.rb

Overview

:nodoc:

Instance Method Summary collapse

Instance Method Details

#-(oth) ⇒ Object

Performs a sort of group difference operation on hashes or arrays

a = {:a=>1,:b=>2,:c=>3}
b = {:a=>1,:b=>2}
c = [:a,:c]
a-b #=> {:c=>3}
a-c #=> {:b=>2}



393
394
395
396
397
398
399
400
 
# File 'lib/net/dns/rr.rb', line 393

def -(oth)
  case oth
  when Hash
    delete_if {|k,v| oth.has_key? k}
  when Array
    delete_if {|k,v| oth.include? k}
  end
end

#key_downcase! ⇒ Object

Returns an hash with all the keys turned into downcase

hsh = {"Test" => 1, "FooBar" => 2}
hsh.key_downcase!
   #=> {"test"=>1,"foobar"=>2}



1259
1260
1261
1262
1263
1264
1265
 
# File 'lib/net/dns/resolver.rb', line 1259

def key_downcase!
  hsh = Hash.new
  self.each do |key,val|
    hsh[key.downcase] = val
  end
  self.replace(hsh)
end