From: Blake Miller <blakeage@...>
Date: 2006-12-02T03:57:08+09:00
Subject: Simple iteration in a function problem

i'm trying to do this, and I'm stuck


class holderOfYs

def initialize()
 @ys = Array.new
end

def addX( x )
 @ys << x
end

# this is the problem function.  all I want is the specific (ONE)
element
# from the @ys array that matches the id, but when you iterate over the
# array, i can't find a way to only have one element returned
def getXById(id)
 @ys.each_with_index do |comp, index|
   if( @ys[index].getUniqueId == id )
     @ys.fetch(index)
   end
 end
end

class Y
 @uniqueId

 def getUniqueId
  @uniqueId
 end

end

class X < Y
 def getUniqueId
  super
 end
end



I tried setting a variable like :
def getXById(id)
 inst = X.new
 @ys.each_with_index do |comp, index|
   if( @ys[index].getUniqueId == id )
     inst = @ys.fetch(index)
   end
 end

 inst
end

...but I'm not looking to instantiate a new X, and even that solution
seems to screw up the @ys array.

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