Golang has strconv library that converts string to int64 and uint64.
However, the rest of integer data types seems to be unsupported as I can't find conversion functions for byte, int16, uint16, int32, uint32 data types.
One can always convert from byte, 16-bit and 32-bit data types to int64 and uint64 without loss of precision. Is that what's intended by language?
Golang具有 strconv 库，可将字符串转换为int64和uint64。
但是，由于我找不到字节的转换函数，其余的整数数据类型似乎不受支持 ，int16，uint16，int32，uint32数据类型。
始终可以将字节，16位和32位数据类型转换为int64和uint64，而不会损失精度。 那是语言的意图吗？
If you look at the docs a bit more closely you can use this method;
微信扫一扫func ParseInt(s string, base int, bitSize int)
https://golang.org/pkg/strconv/#ParseInt
The bitSize argument says how large the int is so you can do 8 or 16 or 32 for those smaller integer types. Atoi calls this internally. I believe you're wanting 10 for the base argument. So like b, err := strconv.ParseInt("5", 10, 8) for a byte.
EDIT: Just going to add a couple things to the answer here in case the OP is in fact confused how to convert a 16-bit int into a string... If that is your intended goal just use fmt.Sprintf or you can do a conversion from smaller int to larger int as it will always succeed. Examples of both here; https://play.golang.org/p/UWSVxEmQ1N
package main
import "fmt"
import "strconv"
func main() {
var a int16
a = 5
s := fmt.Sprintf("%d", a)
s2 := strconv.Itoa(int(a))
fmt.Println(s)
fmt.Println(s2)
}