how exactly this cron parser is working here?

[siddhant3030]

I have tried to import Crontab.CronExpression

Then in iex shell I used this command to parse the corn expression

Crontab.CronExpression.Parser.parse ("* * * * MON-TUE")

But this giving me this output {:ok, ~e[* * * * 1-2 *]}

Crontab.CronExpression.Parser.parse "* * * * *"
{:ok,
  %Crontab.CronExpression{day: [:*], hour: [:*], minute: [:*],
  month: [:*], weekday: [:*], year: [:*]}}

How this example is working?

[maennchen]

This is using a feature called sigils. You can find details about it here: https://elixir-lang.org/getting-started/sigils.html

Basically crontab is registering a sigil when you import it: https://github.com/jshmrtn/crontab/blob/f42a90a1ab227c9137bd9f31d33ccfb1a82439e2/lib/crontab/cron_expression.ex#L140

When using inspect, there is a custom protocol that also displays it as a sigil, since it is better to read than the Crontab.CronExpression struct.: https://github.com/jshmrtn/crontab/blob/f42a90a1ab227c9137bd9f31d33ccfb1a82439e2/lib/crontab/cron_expression.ex#L186

[siddhant3030]

Really good. Thank you for this :).