Services & ResourcesWolfram ForumsMathGroup Archive

[Date Index] [Thread Index] [Author Index]

A ToExpression question

• To: mathgroup at smc.vnet.net
• Subject: [mg58316] A ToExpression question
• From: "Ray Koopman" <koopman at sfu.ca>
• Date: Tue, 28 Jun 2005 05:13:15 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

f1[x_] := Print[x];
f2[x_] := ToExpression["Print[x]"];
f3[x_] := Module[{y = x}, ToExpression["Print[y]"]];
f4[x_] :=  Block[{y = x}, ToExpression["Print[y]"]];

Scan[#[0]&,{f1,f2,f3,f4}]

0
x
y
0

Why don't f2 and f3 print 0 ?

• Follow-Ups:
  • Re: A ToExpression question
    • From: János <janos.lobb@yale.edu>
  • Re: A ToExpression question
    • From: Andrzej Kozlowski <andrzej@akikoz.net>