replace a substring within a string in R

  gsub("substring","replacement","string")

This code uses the R function gsub to replace a substring within a given string. The gsub takes three arguments - the substring to be replaced, the new string to replace it, and the string it should be replaced within. The function will then return a modified string in which the substring has been replaced. For example, if we wanted to replace the substring “foo” with “bar” in the string “foobar”, the code would look like this: gsub("foo","bar","foobar"). The resulting string that this code would return is “barbar”.