# D.size differ from d.send(:size) where d is SimpleDelegator.new(\[\])

**URL:** <https://www.ruby-forum.com/t/d-size-differ-from-d-send-size-where-d-is-simpledelegator-new/174242>\
**Category:** Development\
**Created:** [August 23, 2009, 4:58am UTC](https://www.ruby-forum.com/t/d-size-differ-from-d-send-size-where-d-is-simpledelegator-new/174242 "2009-08-23T04:58:45Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Tanaka\_A](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/c67d28/32.png) [@Tanaka\_A](https://www.ruby-forum.com/u/Tanaka_A)\
**Post date:** [August 23, 2009, 4:58am UTC](https://www.ruby-forum.com/t/d-size-differ-from-d-send-size-where-d-is-simpledelegator-new/174242/1 "2009-08-23T04:58:45Z")

</div>

e$B0J2\<$N$h$&$K!"e(Bsize e$B$H$$$&4X?t$,Dj5A$5$l$F$$$k$H$-!"e(B  
SimpleDelegator.new([]) e$B$KBP$7!"e(Bd.size e$B$He(B d.send(:size)  
e$B$N7ke(B  
e$B2L$,0[$J$j$^$9!#e(B

% ./ruby -ve ’  
require “delegate”  
d = SimpleDelegator.new([])  
def size  
:foo  
end  
p d.size  
p d.send(:size)  
’  
ruby 1.9.2dev (2009-08-23 trunk 24629) [i686-linux]  
0  
:foo

e$B$3$l$K$h$j!"0J2\<$Ne(B e == d e$B$N7k2L$,e(B mkmf e$B$re(B require  
e$B$7$?$+$Ie(B  
e$B$&$+$GJQ$o$j$^$9!#e(B

% ./ruby -ve ’  
require “delegate”  
e = SystemCallError.new(0)  
d = SimpleDelegator.new(e)  
p e == d  
require “mkmf”  
p e == d  
’  
ruby 1.9.2dev (2009-08-23 trunk 24629) [i686-linux]  
true  
false

e$B$=$7$F!"0J2\<$N\<:GT$,e(B test-all e$B$G5/$-$F$$$^$9!#e(B

test\_systemcallerror\_eq(TestDelegateClass)  
[/home/akr/chkbuild/tmp/build/ruby-trunk/20090818T130201/ruby/test/test\_delegate.rb:18]:  
[ruby-dev:34808]