round all float numbers in a string

Question

I am trying to replace all the float numbers in the string with the same numbers rounded to 2 decimal places. For example \"Hello23.898445World1.12212\" should

Answer 1

We can use gsubfn

library(gsubfn)
gsubfn("([0-9.]+)", ~format(round(as.numeric(x), 2), nsmall=2), str1)
#[1] "Hello23.90World1.12"

data

str1 <- "Hello23.898445World1.12212"