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Re: Evaluation details

• To: mathgroup at smc.vnet.net
• Subject: [mg86765] Re: Evaluation details
• From: dh <dh at metrohm.ch>
• Date: Thu, 20 Mar 2008 02:56:23 -0500 (EST)
• References: <frqpsf$57r$1@smc.vnet.net>

Hi,

that's right the right hand side is not evaluated and x is given the 

value x+1. You can verify this by using Information[x]. But now comes 

the pattern matcher and tries to evaluate the resulting expression x+1. 

And it is here where the recursion happens.

hope this helps, Daniel



Mumbo Jumbo wrote:

> Hello,

> 

> I am quite puzzled why a Mathematica statement

> x=x+1;

> causes infinite recursion. Since the ducumentation states that the lhs of

> this statement is not evaluated, it seems to me that the evaluation of the

> rhs should not lead to recursive evaluation.

> TIA, Yuri.

> 

>