Patrick Meyer <patrick.meyer <at> internet.lu> writes:
:
: Thank you Gabor.
:
: But I have a problem with the beginning of my algorithm, where the list
: you call L is empty... then the code breaks down... It says:
:
: "Error in any(...,na.rm = na.rm) : incorrect argument type"
:
: How can I handle this?
:
Good point. We can rescue it by doing the simplification ourself
using unlist(lapply(...)) instead of sapply(...):
L <- list()
newentry <- c("a3", "a1", "a4")
if (!any(unlist(lapply(L, setequal, newentry)))) L <- c(L, list(newentry))
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