Re: Inline-If ?

[Stefan Neumann]

2010/5/14 Jaroslav Hajek <address@hidden>

On Fri, May 14, 2010 at 3:19 PM, Stefan Neumann <address@hidden> wrote:
> is there something like an "inline-if" or "immediate if" in octave?

In Octave 3.3.51+, there is merge() or ifelse()

Jaroslav, thanks for the info. With that I found the answer.

OK, so either go to the test-version or take care of it some other way :-)

% --- file: ifelse.m --- %
function RES = ifelse(c,t,f)
  RES = c .* t + (1-c) .* f ;
end

This seems to do it. Testing:

octave:10> a = round(rand(1,10))
a =   0   0   0   1   1   1   1   0   1   0
octave:11> ifelse(a == 1, 2, 3)
ans =   3   3   3   2   2   2   2   3   2   3

 

... It works for arrays, too, but it doesn't short-circuit (functions can't).

Didn't get that part. Probably something very basic. What did you mean by "doesn't short-circuit" ?

THX
Stefan