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The One-Letter Rails Bug That Slipped Past Rubocop, CI, and Code Reviews

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We often think production bugs happen because of big oversights or complex logic failures. But sometimes, it’s the smallest things—a single typo—that sneak past every safeguard and cause trouble in live environments. Recently, I had one such experience in a Rails project. It wasn’t a major crash, but it did break a piece of business logic under specific conditions. More importantly, it taught me valuable lessons about code reviews, rubocop, and testing discipline—lessons I’d like to share here. The Safeguards We Already Had Like most teams, we don’t push code directly to production. Instead, we follow a layered safety net: ✅ Pre-commit checks to catch obvious mistakes ✅ RSpec test cases to validate logic ✅ CI pipelines to enforce standards and run checks ✅ Code reviews to ensure human oversight ✅ QA testing before deployment You’d think with all this in place, no typo could possibly slip through. So how did it happen? Where Things Went Wrong: Rubocop and a “Helpfu...
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Slack Basics

By Anonymous

                                Slack







What is Slack?


                       Slack is a workplace communication tool, “a single place for messaging, tools and files.” This means Slack is an instant messaging system with lots of add-ins for other workplace tools.

                    The add-ins aren’t necessary to use Slack, though, because the main functionality is all about talking to other people.

There are two methods of chat in Slack:
  • channels (group chat),
  • direct message or DM (person-to-person chat).

  INDEX:

1. How to set your Slack display name(windows)
2. How to make a Slack channel private if it's public(windows)
3.Set your status in slack (windows)
4.Edit or clear your status(windows)

 Let’s take a quick look at the user interface.

1. How to set your Slack display name(windows)




  • open slack and sign into the workspace .

  • Click your profile photo or icon on the top right.

  • Select Edit Profile.

  • Enter the name you want to use in the Display name field.
  • Then save your changes.

2.How to make a Slack channel private if it's public(windows)

  • Select the channel you want to make private from the left sidebar.
  • Click the gear icon next to the name of the channel, located at the top of the screen.
Select "Additional options."
Select "Additional options." Devon Delfino/Business Insider

  • Click "Change to a private channel" — if that isn't listed, you'd need to contact an administrator or owner for assistance, otherwise continue to the next step.
  • Click "Change to Private" to confirm your decision.How to make a private Slack channel(windows)


Click the plus sign next to "Channels" in the left sidebar.You can add new Slack channel. Devon Delfino/Business Insider

Add your channel name and toggle on the "Make private" option.Slide to make the channel private. Devon Delfino/Business Insider

  • Click "Create."
You'd be able to add members to the channel by tagging them in the pop-up which appears immediately after creation, or by selecting "Add people" on the channel page at any time.




3.Set your status in slack (windows)

  • From your desktop, click on your profile picture icon in the top right.
  • Click on the Update your status field.
  • Enter a status and select an emoji or choose a suggested status option.
  • Click on Clear after to choose when your status will clear. If you like, tick the box next to Pause notifications to turn off notifications until your status clears.
  • Click on Save.

4.Edit or clear your status(windows)

  • From your desktop, click on your profile picture in the top right.
  • Click on your current status to edit it, or
  • Click on Clear status to remove it.
  • Click on Save.










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