dynamically creating functions in r
On 05/10/2011 10:57 AM, honeyoak wrote:
it is possible to dynamically create functions in R using lists? what I want
to do is something like this:
a = list()
for (i in 1:10) a[[i]] = function(seed = i) runif(seed)
so that when I call a[i] I get random draws 1,2,....i unfortunately R only
uses the last i .
That is because you never evaluate it until you call the function. You
can do what you want in several ways; one is
for (i in 1:10)
a[[i]] <- local( { default <- i; function(seed = default) runif(seed) } )
Duncan Murdoch
I would also like to know if there is a run-all function
without explicitly looping or using lapply. for example if I have a list 'b'
of functions if I called
run-all(b)
all the functions in list 'b' would be run
thanks.
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