go - How can I convert string to integer in golang -

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i want convert string integer in golang. don't know format of string. example, "10" -> 10, "65.0" -> 65, "xx" -> 0, "11xx" -> 11, "xx11"->0

i searching , find strconv.parseint(). can not handle "65.0". have check string's format.

is there better way?

i believe function looking 

strconv.parsefloat()

see example here

but return type of function float64.

if don't need fractional part of number passed string following function job:

func strtoint(str string) (int, error) {     nonfractionalpart := strings.split(str, ".")     return strconv.atoi(nonfractionalpart[0]) }

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