agiliq

Hugs> Nothing
Nothing
Hugs> Nothing == Nothing
True
Hugs> Nothing > 10
ERROR - Cannot infer instance
*** Instance   : Num (Maybe a)
*** Expression : Nothing > 10

Hugs> Nothing < 10

agiliq

Perl> undef == 10;
Use of uninitialized value in numeric eq (==) at (eval 2) line 3.


Perl> undef > 10;
Use of uninitialized value in numeric gt (>) at (eval 3) line 3.


Perl> undef < 10;
Warning: Use of "undef" without parentheses is ambiguous at (eval 4) line 3.

agiliq

scala> 10 == 10
res6: Boolean = true

scala> null > 10
<console>:5: error: value > is not a member of Null
       null > 10
            ^

scala> null < 10
<console>:5: error: value < is not a member of Null

agiliq

mysql> select null;
+------+
| NULL |
+------+
| NULL | 
+------+
1 row in set (0.00 sec)

mysql> select null>10, null<10, null=null, 10=10 as data;
+---------+---------+-----------+------+

agiliq

SQLite version 3.6.10
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
sqlite> select null;

sqlite> select null>10, null<10, null=null, 10=10 as data;
|||1
sqlite> 

agiliq

Jython 2.2.1 on java1.6.0_0
Type "copyright", "credits" or "license" for more information.
>>> None
>>> None > 10
0
>>> None < 10
1
>>> None == None
1
>>> 

agiliq

Lua 5.1.4  Copyright (C) 1994-2008 Lua.org, PUC-Rio
> print(nil)
nil
> print(nil > 10)
stdin:1: attempt to compare number with nil
stack traceback:
	stdin:1: in main chunk
	[C]: ?
> print(nil < 10)
stdin:1: attempt to compare nil with number

agiliq

phpsh (c)2006 by Charlie Cheever and Dan Corson and Facebook, Inc.
type 'h' or 'help' to see instructions & features
New Feature: You can use the -c option to turn off coloring
php> echo(null > 10)
php> echo(null < 10)
1
php> echo(null == 10)
php> echo(null == null)
1
php> 

agiliq

irb(main):001:0> nil
=> nil
irb(main):002:0> nil > 10
NoMethodError: undefined method `>' for nil:NilClass
	from (irb):2
	from :0
irb(main):003:0> 10 > nil
ArgumentError: comparison of Fixnum with nil failed
	from (irb):3:in `>'
	from (irb):3

agiliq

groovy
http://www.twitpic.com/agmo4/full