# 1 \<\< 2.71

**URL:** <https://www.ruby-forum.com/t/1-2-71/138158>\
**Category:** Development\
**Created:** [May 20, 2008, 5:44pm UTC](https://www.ruby-forum.com/t/1-2-71/138158 "2008-05-20T17:44:20Z")\
**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 20, 2008, 5:44pm UTC](https://www.ruby-forum.com/t/1-2-71/138158/1 "2008-05-20T17:44:20Z")

</div>

1 e$B$re(B 2.71 bit e$B$[$I:8%7%U%H$9$k$He(B 4  
e$B$K$J$k$h$&$G$9$,!"$3$l$Oe(B  
e$B0U?^$5$l$?7k2L$G$7$g$&$+!#e(B

% ./ruby -ve ‘p 1 \<\< 2.71’  
ruby 1.9.0 (2008-05-20 revision 16494) [i686-linux]  
4

---

<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:** [May 21, 2008, 3:52am UTC](https://www.ruby-forum.com/t/1-2-71/138158/2 "2008-05-21T03:52:00Z")

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

In message “Re: [ruby-dev:34776] 1 \<\< 2.71”  
on Wed, 21 May 2008 00:43:52 +0900, Tanaka A. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
writes:

|1 e$B$re(B 2.71 bit e$B$[$I:8%7%U%H$9$k$He(B 4 e$B$K$J$k$h$&$G$9$,!"$3$l$Oe(B  
|e$B0U?^$5$l$?7k2L$G$7$g$&$+!#e(B

e$B$O$$!#$=$N0U?^$=$N$b$N$r8!F$Cf$G$O$"$j$^$9$,!#e(B  
e$B$A$J$\_$Ke(BPerle$B$b$=$&$G$9$M!#e(B

perl -le ‘print 1\<\<2.71’  
4

---

<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:** [May 21, 2008, 4:59am UTC](https://www.ruby-forum.com/t/1-2-71/138158/3 "2008-05-21T04:59:20Z")

</div>

In article [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid),  
Yukihiro M. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) writes:

> e$B$O$$!#$=$N0U?^$=$N$b$N$r8!F$Cf$G$O$"$j$^$9$,!#e(B  
> e$B$A$J$\_$Ke(BPerle$B$b$=$&$G$9$M!#e(B
> 
> perl -le ‘print 1\<\<2.71’  
> 4

e$B$A$J$\_$Ke(B C e$B$He(B Python e$B$He(B Gauche  
e$B$G$O%(%i!\<$G$9$M!#e(B

% cat t.c  
int main(int argc, char \*\*argv)  
{  
1 \<\< 2.71;  
return 0;  
}  
nute(11:57:06)% gcc t.c  
t.c: In function ‘main’:  
t.c:3: error: invalid operands to binary \<\<

% python  
Python 2.4.4 (#2, Apr 15 2008, 23:43:20)  
[GCC 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)] on linux2  
Type “help”, “copyright”, “credits” or “license” for more information.

> > > 1 \<\< 2.71  
> > > Traceback (most recent call last):  
> > > File “”, line 1, in ?  
> > > TypeError: unsupported operand type(s) for \<\<: ‘int’ and ‘float’

% gosh  
gosh\> (ash 1 2.71)  
\*\*\* ERROR: small integer required, but got 2.71  
Stack Trace: