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Date: Sat, 30 Jun 2012 23:57:36 -0500
From: Evan Driscoll <driscoll@cs.wisc.edu>
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To: Chris Angelico <rosuav@gmail.com>
Subject: Re: code review
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On 6/30/2012 23:45, Evan Driscoll wrote:
> You may also
> want to put Java in there as well, as < is effectively not commutative
> in that language. (I didn't try C#.)

I guess you could actually put Lua and Ruby into the roughly same
category as Java too.

But things get a little nastier in =3D=3D, as 'false =3D=3D false =3D=3D =
false'
evaluates as '(false =3D=3D false) =3D=3D false' to 'false' in Java and L=
ua.
(Ruby produces a syntax error for this, roughly the Haskell approach.)

But we have Javascript:
  1 < 1 < 2
  =3D> true
  false =3D=3D false =3D=3D false
  =3D> false

O'Caml:
  # false =3D=3D false =3D=3D false;;
  - : bool =3D false
  # 1 < 2 < true;;
  - : bool =3D false

Java:
  System.out.println(false =3D=3D false =3D=3D false);
  (outputs) false

Lua:
  > print(false =3D=3D false =3D=3D false)
  false

C and C++:
  std::cout << (1 < 1 < 3) << "\n";
  (outputs) 1
  std::cout << (false =3D=3D false =3D=3D false) << "\n";
  (outputs) 0

Evan


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