Fast nested List->data.frame

This is better by a factor of 4:

len = 100000
d = replicate(len, list(pH = 3,marker = TRUE,position = "A"),FALSE)
system.time(
{
    pHAll = data.frame(
      pH = unlist(lapply(d,"[[",1)),
      pH = unlist(lapply(d,"[[",2)),
      pH = unlist(lapply(d,"[[",3)))
}
)

Dieter

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