From: dave <dave.m@...>
Date: 2005-06-16T04:22:16+09:00
Subject: Re: code optimpization: delete_if, each, send.



> delete_if() passes a parameter to your block 

yes, sorry i'm very tired today :(

this code works and does what i need:
---------------
list.delete_if(){|obj|  # the list is an array of objects
  delete = false        # delete the obj from the list
  @tokens.each{|t|      # tockens is the splitted query 
    if (! delete)       
      #
      # func_signs is an hash.
      # keys are regexp. values are functions name.
      # if a token matches the regexp we pass it to 
      # the matched funtion value.
      #
      @func_signs.each_key(){|k|         
        if (t =~ k)
          # the calles function split the tocken and 
          # return true if the obj satisfies this part of tocken
          delete = (! send(@func_signs[k], obj, t))
        end
      }
    end
  }
  delete
}
-----------------


examples:

query = 'inowner:dave'

matches /in(.+)/ => 'in' in func_signs hash.

if object.owner != 'dave' we must delete this object from the list.


i also would add support for or, not operators, ().
but this is another story :) 
 

tnx, bie.


-- 
>here are more things in heaven and earth,
horatio, than are dreamt of in your philosophy.