baptiste auguie wrote:
> sprintf("%04.f", 2)
>
makes no sense to use the float specifier for ints here; besides, it's
slower:
x = 1:10^5
library(rbenchmark)
benchmark(columns=c('test', 'elapsed'), replications=100,
sprintf('%05d', x),
sprintf('%05.f', x))
# test elapsed
# 1 sprintf("%05d", x) 4.952
# 2 sprintf("%05.f", x) 10.019
> sapply(sample(1:1000,4), function(ii) sprintf("%04.f",ii))
sprintf is vectorized!!!
>
> ?sprintf
indeed.
vQ
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