Re: Re: Testing Mathematica Expressions?

*To*: mathgroup at smc.vnet.net*Subject*: [mg106645] Re: [mg106622] Re: Testing Mathematica Expressions?*From*: Andrzej Kozlowski <akozlowski at gmail.com>*Date*: Wed, 20 Jan 2010 06:46:56 -0500 (EST)*References*: <hiuusd$92o$1@smc.vnet.net> <hj131r$be8$1@smc.vnet.net> <201001191012.FAA28974@smc.vnet.net>

On 19 Jan 2010, at 11:12, AES wrote: > In article <hj131r$be8$1 at smc.vnet.net>, Noqsi <jpd at noqsi.com> wrote: > >> On Jan 17, 5:13 am, AES <sieg... at stanford.edu> wrote: >> >>> 5) Is ToExpression["exprx"] /. ruleOne really exactly the same thing >>> (or, will it produce exactly the same results) as exprx /. ruleOne? >> >> That you even ask this question shows that you simply haven't done >> your homework. Please study the tutorials listed at: > > "An example is worth a thousand words." > > I'd be glad to spend some time perusing and attempting to understand an > example (the simple the better, of course) for which > > ToExpression["soks"] /. ruleOne > > and > > soks /. ruleOne > > typed into separate Input cells under identical starting conditions, > where 'soks' is a sequence of key strokes, yield differing results when > evaluated. > Unevaluated[x] /. x -> 3 3 while ToExpression["Unevaluated[x]"] /. x -> 3 Unevaluated[3] Andrzej Kozlowski

**References**:**Re: Testing Mathematica Expressions?***From:*AES <siegman@stanford.edu>