Parsing numbers from strings is a basic but common task in many programs; here's how to do it in Go
package main import ( "fmt" "strconv" ) func main() { f, _ := strconv.ParseFloat("1.234", 64) fmt.Println(f) i, _ := strconv.ParseInt("123", 0, 64) fmt.Println(i) d, _ := strconv.ParseInt("0x1c8", 0, 64) fmt.Println(d) u, _ := strconv.ParseUint("789", 0, 64) fmt.Println(u) k, _ := strconv.Atoi("135") fmt.Println(k) _, e := strconv.Atoi("wat") fmt.Println(e) }
1.234 123 456 789 135 strconv.ParseInt: parsing "wat": invalid syntax
总结 :
1 : ...
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