A script to work out the dates of codebar workshops for the West London chapter

codebar-dates.go

package main

// A script to work out the dates of codebar workshops for the West London chapter.
// Our workshops are on the second and fourth Tuesdays of every month.
// https://codebar.io/west-london

import "time"
import "fmt"

func main() {
	// What year?
	const year = 2024

	// Only for the required year
	lowerDate := time.Date(year, 1, 1, 0, 0, 0, 0, time.UTC)
	upperDate := time.Date(year+1, 1, 1, 0, 0, 0, 0, time.UTC)

	currentDate := lowerDate

	// Grab all the Tuesdays in the year
	tuesdaysByMonth := make(map[time.Month][]time.Time)
	for i := time.January; i <= time.December; i++ {
		tuesdaysByMonth[i] = make([]time.Time, 0)
	}
	for currentDate.Before(upperDate) {
		if currentDate.Weekday() == time.Tuesday {
			month := currentDate.Month()
			tuesdaysByMonth[month] = append(tuesdaysByMonth[month], currentDate)
		}

		currentDate = currentDate.Add(24 * time.Hour)
	}

	// Pull out the second and fourth Tuesdays
	workshopDays := make([]time.Time, 0)
	for i := time.January; i <= time.December; i++ {
		workshopDays = append(workshopDays, tuesdaysByMonth[i][1], tuesdaysByMonth[i][3])
	}

	for _, day := range workshopDays {
		fmt.Printf("%s\n", day.Format("02/01/2006"))
	}
}