From: Tanaka Akira <akr@...>
Date: 2008-05-21T11:58:32+09:00
Subject: [ruby-dev:34786] Re: 1 << 2.71

In article <E1JydU6-0001W6-RV@x61.netlab.jp>,
  Yukihiro Matsumoto <matz@ruby-lang.org> writes:

> はい。その意図そのものを検討中ではありますが。
> ちなみにPerlもそうですね。
>
> perl -le 'print 1<<2.71'
> 4

ちなみに C と Python と Gauche ではエラーですね。

% 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 "<stdin>", 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:
_______________________________________
gosh> 
-- 
[田中 哲][たなか あきら][Tanaka Akira]