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#
# Copyright (c) 2008-2010 Revolution Analytics
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
as.list.iter <- function(x, n=as.integer(2^31-1), ...) {
size <- 64
a <- vector('list', length=size)
i <- 0
tryCatch({
while (i < n) {
if (i >= size) {
size <- min(2 * size, n)
length(a) <- size
}
a[i + 1] <- list(nextElem(x))
i <- i + 1
}
},
error=function(e) {
if (!identical(conditionMessage(e), 'StopIteration'))
stop(e)
})
length(a) <- i
a
}
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