Turning a string of numbers into a list of numbers in R

Question

Apologies if this question is too easy, I know how to do it in Python but I currently need it in R.

As part of an SQL query I get a variable with some numbers (the lengt

Answer 1

We can extract the first list elements and convrert to numeric

library(stringr)
as.numeric(str_extract_all(x, "[0-9.]+")[[1]])
#[1] 0.50 0.25 0.75 0.50

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Or with base R using regmatches/regexpr

as.numeric(regmatches(x, gregexpr("[0-9.]+", x))[[1]])
#[1] 0.50 0.25 0.75 0.50

Or with scan after removing the curly brackets

scan(text= gsub("[{}]", "", x), what = numeric(), sep="," , quiet = TRUE)