> Kurt Hornik writes:
> Steve Martin writes:
>> Hello,
>> All of the funprog functions except Position() use match.fun() early
>> in the body of the function. (Filter() seems to rely on lapply() for
>> this, but the effect is the same.)
> Right.
>> In most cases this isn't a problem, but I can't see why Position()
>> shouldn't look something like
>> Position2 <- function(f, x, right = FALSE, nomatch = NA_integer_) {
>> f <- match.fun(f) # the only difference from Position()
>> ind <- if (right) rev(seq_along(x)) else seq_along(x)
>> for (i in ind) {
>> if (f(x[[i]])) return(i)
>> }
>> nomatch
>> }
>> This would make it consistent with the other funprog functions, and
>> would mean that Find() and Position() give the same result when
>> expected
> Indeed. I'll look into adding the match.fun ...
Changed now with c80873.
Best
-k
> Best
> -k
>>> equals3 <- function(x) x == 3
>>> Position("equals3", 1:5)
>> Error in f(x[[i]]) : could not find function "f"
>>> Position2("equals3", 1:5)
>> [1] 3
>>> Find("equals3", 1:5)
>> [1] 3
>> Thanks,
>> Steve
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