I see, but what is the difference between:
b [2,3] = 3
and
b = b.+2
Paul
W dniu 2014-05-30 10:11, Tomas Lycken pisze:
@Paul,
Try
julia> a = ones(5,5);
julia> b = a;
julia> b[2,3] = 2;
julia> a == b
true
On Wednesday, May 28, 2014 9:22:26 PM UTC+2, Jameson wrote:
b+3 is not the same as a (or b, from the prior stage, for that
matter). It doesn't matter whether a and b are numbers or
matrices, large or small
On Wednesday, May 28, 2014, paul analyst <[email protected]
<javascript:>> wrote:
Thx,
I'm surprised. I suspect, and I did:
a = ones (5,5)
b = a
b = b +3
a == b
false
That is not the case for small and large objects? This is not
OK :/
W dniu środa, 28 maja 2014 21:11:12 UTC+2 użytkownik Patrick
O'Leary napisał:
> FSbis=FS
This binds the identifier FSbis to the same memory that FS
is bound to, so the identifiers are aliases for one another.
If you want FSbis to start out initialized to the same
values as those in FS, but be a separate container, use
`FSbis = copy(FS)`.
On Wednesday, May 28, 2014 2:07:38 PM UTC-5, paul analyst
wrote:
Code running back? what happens?
I have a arrayFS
julia> println(sum(FS));
9.8267205e7
julia> l,m=size(FS);
julia> FSbis=FS;
julia>
julia>
julia> for i=1:l; #println(i)
if w[i]==1 us=hcat(F[i,:]',[1:1:m]);
us=sortrows(us, by=x->x[1],rev=true);
for j=1:m
if in(us[j,2],Su)
FSbis[i,us[j,2]]=us[j,2]; break end;
end;
end;
end;
julia>
julia> println(sum(FSbis));
1.03295914e8
julia>
julia> println(sum(FS));
1.03295914e8
after the code arrayFSbis changing and well. But the
array FS too is changing! Why? Compare sum(FS) before
and after.
Paul
