Dumb Golang Month "Parse"

better.go

package main

import (
    "fmt"
    "time"
)

func main() {
    const (
        input = "November 2019"
        dfmt  = "January 2006"
    )

    t, err := time.Parse(dfmt, input)

    if err != nil {
        panic(err)
    }

    fmt.Printf("Month: %d\n", t.Month())
    fmt.Printf("Year: %d\n", t.Year())
}

main.go

package main

import (
	"fmt"
	"strings"
	"time"
)

var MonthSet map[string]time.Month

func init() {
	MonthSet = make(map[string]time.Month)
}

func initMonths() {
	MonthSet["January"] = time.January
	MonthSet["February"] = time.February
	MonthSet["March"] = time.March
	MonthSet["April"] = time.April
	MonthSet["May"] = time.May
	MonthSet["June"] = time.June
	MonthSet["July"] = time.July
	MonthSet["August"] = time.August
	MonthSet["September"] = time.September
	MonthSet["October"] = time.October
	MonthSet["November"] = time.November
	MonthSet["December"] = time.December
}

func parseMonth(s string) time.Month {
	m, ok := MonthSet[s]

	if !ok {
		return time.Month(0)
	}

	return m
}

func main() {
	initMonths()

	input := "November 2019"
	pieces := strings.Split(input, " ")

	ms, md := pieces[0], parseMonth(pieces[0])

	fmt.Printf("%s %d\n", ms, md)
}