Solving easy problems with Ruby

I got this problem from here Implement a group_by_owners function that: Accepts a hash containing the file owner name for each file name. Returns a hash containing an array of file names for each owner name, in any order. For example, for hash {‘Input.txt’ => ‘Randy’, ‘Code.py’ => ‘Stan’, ‘Output.txt’ => ‘Randy’} the group_by_owners function should return {‘Randy’ => [‘Input.txt’, ‘Output.txt’], ‘Stan’ […]

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How to remove Docker files

I have been using docker for a while in a project and thank god it exists. There is no need in installing many project dependencies. In this case this is a Ruby on Rails 3 project, yes very old. Everything was fine until my root partition “/” was out of space! I thought to myself […]

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The importance of a Backup

Before I started working professionally as a software engineer, I would see a lot of people talking about the importance of backups in the IT industry. A few weeks ago I worked on a project that didn’t have any backups and was in production! The first thing I did was a backup and used the […]

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Heroku rollback

A while ago had a problem in a production server in which I used Heroku’s rollback command, which goes back to the previous push/migration. When you run: heroku rollback It goes a step back in your commits/changes but upgrades the version. Current version = v33, after rollback current version = 34. If for any reason rollback […]

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