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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