Re: Inline-If ?

[Jaroslav Hajek]

On Fri, May 14, 2010 at 3:19 PM, Stefan Neumann <address@hidden> wrote:
>
>
> Hi,
>
> is there something like an "inline-if" or "immediate if" in octave?
>
> in C there is this: RES = (a==1)?1:0
> in some other languages there are functions like if(expr-test , expr_true ,
> expr_false)
>
> THX
> Stefan
>

In Octave 3.3.51+, there is merge() or ifelse() (they're just
aliases). It works for arrays, too, but it doesn't short-circuit
(functions can't).

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

   1   0   0   0   1   0   0   0   0   0

octave:4> ifelse(a == 1, 2, 3)
ans =

   2   3   3   3   2   3   3   3   3   3


-- 
RNDr. Jaroslav Hajek, PhD
computing expert & GNU Octave developer
Aeronautical Research and Test Institute (VZLU)
Prague, Czech Republic
url: www.highegg.matfyz.cz