Implement new Concept Exercise: time-duration

[oanaOM]

This issue describes how to implement the time-duration concept exercise for the Go track.

Getting started

The docs can be found here

• What are Concept Exercises?
• Concept Exercises
• Concepts

Goal

The goal of this exercise is to teach the student how concept time and duration is implemented in Go.

Learning objectives

• Define the relation between time.Time and time.Duration.
• Know how to measure time using time.Since ( e.g. execution time of a function -- no defer !) .
• Know how to use time.Add and time.Sub
• Know about time units and maybe do some calculations

Out of scope

• Measuring time should to include defer
• Sleep, After, ticker etc.

Concepts

• time-duration

Prerequisites

• time

Resources to refer to

• Time package

Story Idea

There is already a possible story including tasks in the story list: https://exercism.org/docs/building/tracks/stories/datetimes-time-keeper
This might be helpful as a template.

Help

If you have any questions while implementing the exercise, please post the questions as comments in this issue.

[ghost]

@junedev I'd like to work on this

[ghost]

• Finish exercise "Booking up for Beauty"
• Review PR booking-up-for-beauty: add link and improve task with AnniversaryDate() #2243 (and associated Go By Example page
• Review concept exercise "The Time Keeper"
• Create files and directories in $PROJECT_ROOT/exercises/concept/the-time-keeper based on this documentation
• Solve and test exercise locally with functionality:
  • race duration
  • timezone difference
  • fix offline device
  • recalculate start
  • filter stray times
  • leaderboard
• Create PR

[junedev]

@saurabhmshr Are you still working on this?

[ghost]

@junedev yes - I plan on having it out for review by Monday 24th October.

EDIT: Updated previous comment with sub-tasks for functionality