[R] fast matrix update

vincent vincent at 7d4.com
Wed May 18 11:44:50 CEST 2005

I use extensively m[i0:i1,j0:j1] = ... to update matrices parts.
This writing is very convenient, but, since I'm doing this
calculus many many times, I would like to know if there is a way
(a hope ?) to do the same operation faster ?
Thanks for any advice or pointer.

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