Iterator Maker Generator
The makeIwrapper function makes iterator makers. The resulting iterator makers all take
an optional count argument which specifies the number of times the
resulting iterator should fire. The iterators are wrappers around functions
that return different values each time they are called. The isample function
is an example of one such iterator maker (as are irnorm, irunif, etc.).
makeIwrapper(FUN) isample(..., count)
FUN |
a character string naming a function that generates different values each time it is called; typically one of the standard random number generator functions. |
count |
number of times that the iterator will fire. If not specified, it will fire values forever. |
... |
arguments to pass to the underlying |
An iterator that is a wrapper around the corresponding function.
# create an iterator maker for the sample function
mysample <- makeIwrapper('sample')
# use this iterator maker to generate an iterator
# that will generate three five member samples from the
# sequence 1:100
it <- mysample(1:100, 5, count=3)
nextElem(it)
nextElem(it)
nextElem(it)
try(nextElem(it)) # expect a StopIteration exceptionPlease choose more modern alternatives, such as Google Chrome or Mozilla Firefox.