How to prevent evaluation.

• Subject: How to prevent evaluation.
• From: Robert Dodier
• Date: Tue, 5 Jan 2010 15:01:08 -0700

On Mon, Dec 28, 2009 at 2:33 PM, Richard Hennessy
<rich.hennessy at verizon.net> wrote:

> What I think I need to do is dynamically generate an
> if then else statement as the output from piecewise().

My advice is to do that via buildq which is essentially
a mechanism to substitute in parallel without evaluation.

buildq ([e : x > 0, a1 : foo + 1, a2 : foo - 1], if e then a1 else a2);
 => if x > 0 then foo + 1 else foo - 1

HTH

Robert Dodier

• Prev by Date: Integration tests? And online help?
• Next by Date: How to prevent evaluation.
• Previous by thread: How to pass a power series to find_root
• Next by thread: How to prevent evaluation.
• Index(es):
  • Date
  • Thread