From: Pit Capitain <pit@...>
Date: 2006-11-15T17:38:04+09:00
Subject: Re: Design problem with 'inject'

Gary Boone schrieb:
> The real problem is that 'inject' has two semantics: 1) it adds onto sum 
> using an explicit "sum +=" or 2) is adds the value of the block.

Gary, that's not true. The version of inject you use (with an explicit 
initial value for the accumulator) works as follows:

   def my_inject(initial_value)
     accumulator = initial_value
     self.each do |element|
       accumulator = yield(accumulator, element)
     end
     accumulator
   end

The result of the block simply becomes the next value of the accumulator.

Regards,
Pit