# Exceptions that Fiber#yield raises

**URL:** <https://www.ruby-forum.com/t/exceptions-that-fiber-yield-raises/106708>\
**Category:** Development\
**Created:** [June 13, 2007, 3:05pm UTC](https://www.ruby-forum.com/t/exceptions-that-fiber-yield-raises/106708 "2007-06-13T15:05:05Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![sheepman](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/d07c76/32.png) [@sheepman](https://www.ruby-forum.com/u/sheepman)\
**Post date:** [June 13, 2007, 3:05pm UTC](https://www.ruby-forum.com/t/exceptions-that-fiber-yield-raises/106708/1 "2007-06-13T15:05:05Z")

</div>

e$B$3$s$P$s$O!"e(Bsheepman e$B$G$9!#e(B

Fiber#yield e$B$,Ej$2$kNc30$,!"%P%C%/%H%l!\<%9$K\>pJs$r4^$s$G$J$$$N$Ge(B  
e$B%G%P%C%0$NLr$KN)$A$^$;$s!#$I$3$G%(%i!\<$,5/$-$?$+J,$+$k$h$&$K$G$-$J$$e(B  
e$B$G$7$g$&$+!#Nc$($P0J2\<$\_$?$$$J46$8$G!#e(B

$ cat r.rb  
class Fiber  
def self.new2(&b)  
self.new {  
begin  
b.yield  
rescue =\> e  
e  
end  
}  
end

def yield2  
ret = self.yield  
if ret.is\_a? Exception  
raise ret  
else  
ret  
end  
end  
end

def raize  
raise StandardError  
end

f = Fiber.new2 do  
raize  
end

f.yield2

$ ruby-1.9 -v r.rb  
ruby 1.9.0 (2007-06-10 patchlevel 0) [i686-linux]  
r.rb:23:in `raise': StandardError (StandardError) from r.rb:23:in`raize’  
from r.rb:27:in `block in <main>' from r.rb:5:in`yield’  
from r.rb:5:in `block in new2’

---

<div class="post-metadata">

**Author:** ![sheepman](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/d07c76/32.png) [@sheepman](https://www.ruby-forum.com/u/sheepman)\
**Post date:** [June 14, 2007, 5:18am UTC](https://www.ruby-forum.com/t/exceptions-that-fiber-yield-raises/106708/2 "2007-06-14T05:18:20Z")

</div>

e$B!!$5$5$@$G$9!#e(B

sheepman e$B$5$s$O=q$-$^$7$?e(B:

> Fiber#yield e$B$,Ej$2$kNc30$,!"%P%C%/%H%l!\<%9$K\>pJs$r4^$s$G$J$$$N$Ge(B  
> e$B%G%P%C%0$NLr$KN)$A$^$;$s!#$I$3$G%(%i!\<$,5/$-$?$+J,$+$k$h$&$K$G$-$J$$e(B  
> e$B$G$7$g$&$+!#Nc$($P0J2\<$\_$?$$$J46$8$G!#e(B

e$B!!LdBj$,$h$/$o$+$i$J$+$C$?$N$G$9$,!":#$Ne(B Fiber  
e$B$NNc30EAGE$OJQe(B  
e$B$J$N$G!"$=$s$J$U$&$KJQ$($F$\_$^$9!#e(B