# SimpleDelegator.new(SystemCallError.new(0)) and ==

**URL:** <https://www.ruby-forum.com/t/simpledelegator-new-systemcallerror-new-0-and/138401>\
**Category:** Development\
**Created:** [May 22, 2008, 4:55pm UTC](https://www.ruby-forum.com/t/simpledelegator-new-systemcallerror-new-0-and/138401 "2008-05-22T16:55:31Z")\
**Posts on this page:** 3\
**Page:** 1

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**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:** [May 22, 2008, 4:55pm UTC](https://www.ruby-forum.com/t/simpledelegator-new-systemcallerror-new-0-and/138401/1 "2008-05-22T16:55:31Z")

</div>

e$B0J2\<$N$h$&$Ke(B == e$B$,BP\>N$G$J$$$N$O$h$m$7$/$J$$$s$8$c$J$$$G$7$ge(B  
e$B$&$+!#e(B

% ./ruby -rdelegate -ve ‘e = SystemCallError.new(0)  
p SimpleDelegator.new(e) == e  
p e == SimpleDelegator.new(e)’  
ruby 1.9.0 (2008-05-22 revision 16533) [i686-linux]  
/home/akr/ruby/yarvo0/lib/ruby/1.9.0/delegate.rb:225: warning: instance  
variable @delegate\_sd\_obj not initialized  
true  
/home/akr/ruby/yarvo0/lib/ruby/1.9.0/delegate.rb:225: warning: instance  
variable @delegate\_sd\_obj not initialized  
false

---

<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:** [October 26, 2008, 7:13am UTC](https://www.ruby-forum.com/t/simpledelegator-new-systemcallerror-new-0-and/138401/2 "2008-10-26T07:13:37Z")

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Tanaka A. e$B$5$s$O=q$-$^$7$?e(B:

> e$B0J2\<$N$h$&$Ke(B == e$B$,BP\>N$G$J$$$N$O$h$m$7$/$J$$$s$8$c$J$$$G$7$ge(B  
> e$B$&$+!#e(B

o = Object.new  
p SimpleDelegator.new(o) == o  
p o == SimpleDelegator.new(o)

e$B$b$=$&$J$j$^$9$M!#;W$&$K!"e(B  
if (TYPE(rhs) != expected) {  
return funcall(rhs, cmp, self);  
}

e$BE\*$J\<BAu$r$7$F$J$$%/%i%90lHL$GH/@8$7$^$9$h$M!#e(B  
e$B$3$l$O$$$+$,$7$?$b$N$G$7$g$&$+!#Hf3SMQ$Ne(Bcoercee$B$N$h$&$J$b$N$,I,MW$G$7$g$&$+e(B?

---

<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:** [October 27, 2008, 5:00am UTC](https://www.ruby-forum.com/t/simpledelegator-new-systemcallerror-new-0-and/138401/3 "2008-10-27T05:00:30Z")

</div>

e$B$^$D$b$He(B e$B$f$-$R$m$G$9e(B

In message “Re: [ruby-dev:36933] Re:  
SimpleDelegator.new(SystemCallError.new(0)) and ==”  
on Sun, 26 Oct 2008 15:11:18 +0900, Yugui [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) writes:

|Tanaka A. e$B$5$s$O=q$-$^$7$?e(B:  
|\> e$B0J2\<$N$h$&$Ke(B == e$B$,BP\>N$G$J$$$N$O$h$m$7$/$J$$$s$8$c$J$$$G$7$ge(B  
|\> e$B$&$+!#e(B  
|  
|o = Object.new  
|p SimpleDelegator.new(o) == o  
|p o == SimpleDelegator.new(o)  
|  
|e$B$b$=$&$J$j$^$9$M!#;W$&$K!"e(B  
|if (TYPE(rhs) != expected) {  
| return funcall(rhs, cmp, self);  
|}  
|  
|e$BE\*$J\<BAu$r$7$F$J$$%/%i%90lHL$GH/@8$7$^$9$h$M!#e(B  
|e$B$3$l$O$$$+$,$7$?$b$N$G$7$g$&$+!#Hf3SMQ$Ne(Bcoercee$B$N$h$&$J$b$N$,I,MW$G$7$g$&$+e(B?

e$BBP\>N@-$r0];}$7$h$&$H$9$l$P$=$&$J$k$+$b$7$l$^$;$s$M!#\<B:]$N$He(B  
e$B$3$m!“$I$N$/$i$$=EMW$J$b$N$J$s$G$7$g$&$+!#$+$J$je(B(e$B\<BAu!”\<B9T$He(B  
e$B$be(B)e$B%3%9%H$,$+$+$k$3$H$,M=A[$5$l$^$9$,!"$=$l$r@5Ev2=$9$k$/$i$$!)e(B

```
                            e$B$^$D$b$He(B e$B$f$-$R$me(B /:|)

```