Knowledge base for teams
Strange behaviour of roo gem when working with sheets (tabs)Public
Recently I realised a strange behaviour of roo gem when working with sheets (tabs). Here's what works non-intuitively in my opinion.
@aleksanderHow to generate Excel column symbols in Ruby - Cool one-liner #1Public
How to generate Excel column symbols in Ruby ``` ('A'..'Z').to_a.unshift(nil).product(('A'..'Z').to_a).map { |arr| arr.compact.join } ``` If you woul...
How to be up to date with Ruby and Ruby On Rails releasesPublic
Ruby releases: https://www.ruby-lang.org/en/downloads/releases/ Ruby On Rails releases: https://rubygems.org/gems/rails/versions
Example tmux script for RailsPublic
Shell script that will start a tmux session with Rails console and server in side panes
How to add images (i.e. logo) to email messages while using Pony gem.Public
Pony gem allows to easily send good looking and customizable emails, but it doesn't provide a way to include image in a way that it will be displayed in gma...
Prettier raw SQL in rubyPublic
Use this syntax to format raw SQL nicely in ruby code. In some editors it also enables SQL syntax highlighting.
Set the same password for all users in one queryPublic
Reset devise passwords quickly, even for thousands of users.
How to get image details like creation timestamp using MiniMagicPublic
How to get image details like creation date and tile using MiniMagic
Multiline method memoization in rubyPublic
Method memoization in ruby is easy when the method is one line long: ``` def something @something ||= # your calculations end ``` But when we hav...
Launching subprocessess in RubyPublic
This graph shows several ways to launch subprocess in Ruby.
De Morgan's laws in RubyPublic
The negation of a disjunction is the conjunction of the negations and The negation of a conjunction is the disjunction of the negations.
Ruby logger log levelsPublic
OK, it seems obvious but I always spend several minutes finding it. So I think it's a good idea to put it here.
How to include logo into devise messagesPublic
A quick guide how to include any file, in this case logo to devise messages
Rubular - a Ruby regular expressions editorPublic
Rubular is an online tool to check regular expressions written in Ruby.
