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Re: Is there ToNumber?

• To: mathgroup at smc.vnet.net
• Subject: [mg119616] Re: Is there ToNumber?
• From: SigmundV <sigmundv at gmail.com>
• Date: Tue, 14 Jun 2011 06:13:39 -0400 (EDT)
• References: <isnllk$n7b$1@smc.vnet.net> <201106090945.FAA06238@smc.vnet.net>

I had imagined that applying Real to the string would make it a
number, e.g. Real@@"1.2", but it doesn't work:

In[1]:= Head[Real @@ "1.2"]

Out[1]= String

Of course ToExpression works as intented:

In[2]:= Head[ToExpression@"1.2"]

Out[2]= Real

Why can't I simply change the head of a string by using Apply?

• Follow-Ups:
  • Re: Is there ToNumber?
    • From: Daniel Lichtblau <danl@wolfram.com>

• References:
  • Re: How show axes labels with AxesOrigin->{0,0,0} in 3D?
    • From: Peter Breitfeld <phbrf@t-online.de>