[R] Increment element of vector and efficiency

Pascal A. Niklaus Pascal.Niklaus at unibas.ch
Thu Nov 20 14:43:48 CET 2003

Hi all,

Thanks for the incredibly quick help with the "%in%"...

There's a second question, though: I'd like to increment an element of a 
vector if a certain event occurs, e.g.

    count[event] <- count[event] + 1;         # works, but...

Is this efficient? I wonder whether R needs to subset the count vector 
on both sides of the assignment operator (i.e., twice), or whether 
there's a shortcut like "++" in C, e.g. "count[i]++" or similar?


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