How can I call a class method in Ruby with the method name stored in an array? -

i working on poker game in ruby. instead of using numerous if-else statements check value of player's hand, decided following:

  #calculate players score   def score     poss.map {|check|       if (check[1].call())         @score = check[0]         puts @score         return check[0]       else         false       end     }   end        poss = [     [10, :royal_flush?],     [9, :straight_flush?],     [8, :four_kind?],     [7, :full_house?],     [6, :flush?],     [5, :straight?],     [4, :three_kind?],     [3, :two_pairs?],     [2, :pair?]   ] 

the second item in each item of 'poss' method created check whether player has hand. attempting call method .call(), following error:

player.rb:43:in `block in score': undefined method `call'  :royal_flush?:symbol (nomethoderror)    player.rb:42:in `map'  player.rb:42:in `score'     player.rb:102:in `get_score'   player.rb:242:in `<main>' 

http://ruby-doc.org/core-2.2.2/object.html object#send method looking for.

since wanting 'class method', object should self when declaring instance methods of class contains 'class methods'

try code

 #calculate players score   def score     poss.map |check|       if self.send check[1]          @score = check[0]         puts @score         return check[0]       else         false       end     end   end        poss = [     [10, :royal_flush?],     [9, :straight_flush?],     [8, :four_kind?],     [7, :full_house?],     [6, :flush?],     [5, :straight?],     [4, :three_kind?],     [3, :two_pairs?],     [2, :pair?]   ] 

styles vary person person, however, think when using multi line blocks, best use 'do,end' pair instead of '{ }'

https://github.com/bbatsov/ruby-style-guide

i think confusion may come code looks this

foobar = ->(foo,bar){puts "passed in #{foo}, #{bar}"} foobar.call("one","two") 

if first line abstracted other parts of program may have thought foobar method, lambda. procs , lambdas methods better.. in own way.. check out article on procs, blocks , lambdas.

http://www.reactive.io/tips/2008/12/21/understanding-ruby-blocks-procs-and-lambdas/

but if interested check out https://www.codecademy.com/forums/ruby-beginner-en-l3zci more detailed hands on pbls