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Re: inline functions

From: Etienne Grossmann
Subject: Re: inline functions
Date: Sat, 10 Aug 2002 18:11:56 +0100
User-agent: Mutt/1.3.28i


On Sat, Aug 10, 2002 at 01:32:42PM +0000, Steffan Berridge wrote:
# Hi,
# I have just started using Octave, having used Matlab for a
# while.  In Matlab I have often used inline functions, they
# are very convenient for example when passing a function as
# an argument.
# For example, the following is a function returning the
# square of the argument:
# fun = inline('x^2','x');

  I don't know of any inline() function for Octave, but you can define
new functions with eval(). You can then use its name (a string) as a
pointer to the function, and call it with feval(). Example :

  ## myfun() is defined as a global function
  eval ("function y = myfun (x), y = x.^2; end;")

  y = feval ("myfun", xx);

# One can then pass this function as an argument to another
# function:
# x = foo(fun,...);
# So my question is, is there an equivalent construction in
# Octave?  If not, what is the best way to pass functions as
# arguments?

  Currently, use a string holding the function name.


Etienne Grossmann ------

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