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@timvisee
timvisee / falsehoods-programming-time-list.md
Last active April 19, 2026 22:13
Falsehoods programmers believe about time, in a single list

Falsehoods programmers believe about time

This is a compiled list of falsehoods programmers tend to believe about working with time.

Don't re-invent a date time library yourself. If you think you understand everything about time, you're probably doing it wrong.

Falsehoods

  • There are always 24 hours in a day.
  • February is always 28 days long.
  • Any 24-hour period will always begin and end in the same day (or week, or month).
@markddavidoff
markddavidoff / slack-pagerduty-oncall.py
Last active April 16, 2025 20:47
Updates a Slack User Group with People that are on call in PagerDuty (updated for pagerduty v2 api and pull from env vars instead of KMS). Based on:https://gist.github.com/devdazed/473ab227c323fb01838f
"""
Lambda Func to update slack usergroup based on pagerduty rotation
From: https://gist.github.com/devdazed/473ab227c323fb01838f
NOTE: If you get a permission denied while setting the usergroup it is because there’s a workspace preference in slack
that limits who can manage user groups. At the time of writing it was restricted to owners and admins so i had to get
an owner to install the app. First i added them as a collaborator and then had them re-install the app, and got the new
auth token and added that to param store.