Re: equaltity of lists
- To: mathgroup at smc.vnet.net
- Subject: [mg19063] Re: equaltity of lists
- From: "Allan Hayes" <hay at haystack.demon.co.uk>
- Date: Thu, 5 Aug 1999 01:34:52 -0400
- References: <7o5ih1$rml@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Drago:
lhs == rhs gives True if lhs and rhs are identical (allowing things like
2.0 == 2)
lhs == rhs gives False if lhs and rhs are determined to be unequal by
comparisons between numbers or other raw data, such as strings
otherwise lhs == rhs give lhs == rhs .
The last is the case with a==b
But
a === b
False
because:
lhs === rhs gives True if lhs and rhs are identical (not allowing 2.0 == 2)
otherwise lhs === rhs give False .
The last is the case with a==b
Allan
---------------------
Allan Hayes
Mathematica Training and Consulting
Leicester UK
www.haystack.demon.co.uk
hay at haystack.demon.co.uk
Voice: +44 (0)116 271 4198
Fax: +44 (0)870 164 0565
Drago Ganic <drago.ganic at in2.hr> wrote in message
news:7o5ih1$rml at smc.vnet.net...
> Hi !!
>
> Why don't I get an answer (False) when I ask Mathematica
>
> {a,b}=={b,a}
>
> like the one I get with
>
> {1,2}=={2,1}
> False
>
> Greetings from Croatia,
> Drago Ganic
>
>
>