Looking for an elegant way to parse an Integer

Question

Right now I am doing the following in order to parse an integer from a string and then convert it to int type:

tmpValue, _ := strconv.ParseInt(str, 10, 64) //returns int64
finalValue = int(tmpValue)

It is quite verbose, and definitely not pretty, since I haven't found a way to do the conversion in the ParseInt call. Is there a nicer way to do that?

Answer 1

It seems that the function strconv.Atoi does what you want, except that it works regardless of the bit size of int (your code seems to assume it's 64 bits wide).

Answer 2

If you have to write that once in your program than I see no problem. If you need at several places you can write a simple specialization wrapper, for example:

func parseInt(s string) (int, error) {
        i, err := strconv.ParseInt(str, 10, 32)  // or 64 on 64bit tip
        return int(i), err
}

The standard library doesn't aim to supply (bloated) APIs for every possible numeric type and/or their combinations.