On Oct 2, 2012, at 06:00 , Fabrice Tourre wrote:
> Dear list,
>
> When I read some source code, I find lot of place used symbol <<- , e.g.
>
> lastTime <<- newTime;
>
> What is the meaning here?
Did you check help("<<-") ? The explanation there seems at least as clear as
anything I could cook up in a quick mail...
>
> Also, I find some method with the name start with dot, e.g.
>
> .RowStandardizeCentered = function(x) {
> div = sqrt( rowSums(x^2) );
> div[ div == 0 ] = 1;
> return( x/div );
> }
>
> What is the special meaning for the method name start with a dot?
It means nothing in particular, except that such objects don't show up in ls()
by default. The _intention_ is usually that the function is only to be used
internally and not for end-user use.
--
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd....@cbs.dk Priv: pda...@gmail.com
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