??? 

Could I have that again please? I don't follow.

 In-place in my  usage of the word here means that the result of the 
multiplication is immediately stored  in the matrix J,, without a temporary 
being created  and then assigned  to J.

Thanks,

Petr

On Sunday, December 14, 2014 5:00:40 PM UTC-8, John Myles White wrote:
>
> Assigning in-place and creating temporaries are actually totally 
> orthogonal. 
>
> One is concerned with mutating J. This is contrasted with writing, 
>
> J = K * M 
>
> The other is concerned with the way that K * M gets computed before any 
> assignment operation or mutation can occur. This is contrasted with 
> something like A_mul_B. 
>
>  -- John 
>
> Sent from my iPhone 
>
> > On Dec 14, 2014, at 7:48 PM, Petr Krysl <[email protected] 
> <javascript:>> wrote: 
> > 
> > Hello everybody, 
> > 
> > I hope someone knows this:  What is the use of writing 
> > 
> > J[:,:] = K*M 
> > 
> > where all of these quantities are matrices? I thought I'd seen somewhere 
> that it was assigning to the matrix "in-place"  instead of creating a 
> temporary.   Is that so? 
> > I couldn't find it in the documentation   for 0.3. 
> > 
> > Thanks, 
> > 
> > Petr 
>

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