search for: listappend

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2007 Oct 18
3
append/concatenate an element to a list in C-language
...elements, including the additional one. i'm also interested in knowing how should i properly handle protections of the SEXP objects when doing this. i've been looking at the R source code for everything that has to do with CAR, CDR, CONS, and even found functions with promising names like listAppend or GrowList but i have not been able to figure this out nor i haven't been able to find any reference on how to do this by googling all around, so any help will be very much appreciated. thanks a lot!!! robert.
2001 Sep 10
1
on.exit processing
I have encountered a 'strange' behavior in the 'on.exit' processing. I had a function where I setup an 'on.exit' condition and then later on added to it with an 'on.exit({...}, add=T)'. What appeared to happen is that on subsequent calls to the function, even if only the first 'on.exit' was called, it was still executing the one with the 'add=T'.