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John Carney johncarney

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@johncarney
johncarney / macOS-security.sh
Last active September 4, 2025 15:06
Simple macOS secrets management
# I sometimes need to securely manage credentials for external services for work
# purposes and these need to be available in environment variables. It would be
# nice to think that I only need these credentials for non-production
# environments, but that is not always the case. Rather than using .env files
# or similar plaintext mechanisms, I use macOS's `security` tool to add
# these credentials to my login keychain and store them in environment
# variables.
# Add a generic password to yur macOS login keychain. You will be prompted
# to enter the password.
@johncarney
johncarney / presence_refinements.rb
Last active August 15, 2024 20:01
Simple drop-in refinements module that replicates Rails's presence methods
# frozen_string_literal: true
module PresenceRefinements
refine Object do
def blank? = (respond_to?(:empty?) ? !!empty? : !self)
def present? = !blank?
def presence = (self if present?)
end
# This bit is cribbed from https://github.com/rpanachi/core_ext
@johncarney
johncarney / pre-push
Last active July 29, 2024 18:04
Git pre-push rubocop check
#!/bin/sh
# Passes all changed and added files on the current branch to RuboCop before pushing. Paste the below into your
# .bin/hooks/pre-push file, which should be made executable.
# Note that it assumes that your trunk branch is named "main." If this is not the case, make the appropriate adjustment.
TRUNK_BRANCH=main
CURRENT_BRANCH="$(git branch --show-current)"
if [ "$CURRENT_BRANCH" != "$TRUNK_BRANCH" ]; then
rubocop $(git diff --name-status "$TRUNK_BRANCH" "$CURRENT_BRANCH" | egrep '^[AM]' | cut -f 2 | egrep '(^Gemfile|.rb)$')
@johncarney
johncarney / rspec-flake-finder.rb
Last active July 15, 2024 22:32
RSpec Flake Finder
#!/usr/bin/env ruby
# frozen_string_literal: true
require "json"
require "open3"
require "pathname"
require "tempfile"
# Detects intermittent failures in an RSpec test suite and reports on varying
# coverage.
@johncarney
johncarney / socials.md
Last active August 16, 2023 21:46
Socials
@johncarney
johncarney / music-i-like.md
Last active September 23, 2022 22:51

Music I like

A random list of tracks that comes up in the algorithmic feeds I listen to that I particularly like.

Track Artist Country
[Gagarin] [Public Service Broadcasting] UK
[As I Went Out One Morning][dps-01] [Dirty Projectors] US
[Make The Road By Walking][msb-01] [Menahan Street Band] US
[Home][vs-01] [Villagers] Ireland
@johncarney
johncarney / options.rb
Created July 12, 2020 23:42
Wrapper for OptionParser
# frozen_string_literal: true
require "active_support/all"
require "optparse"
module Options
extend ActiveSupport::Concern
included do
delegate :arguments, :options, to: :Options
@johncarney
johncarney / call_me.md
Last active July 12, 2020 22:37
Module for implementing the service object pattern that allows for custom 'verbs'

A module for implementing the Service Object pattern that allows for custom "verbs".

Usage

Including CallMe in your class adds a call class method that instantiates an object of the class using the provided arguments and invokes its call method. For example:




  


  




    


          
    

      

        
        

          

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                johncarney
                / pre-push.sh
            
            

              Last active
              March 3, 2020 20:04
            

              
                Git pre-push hook that runs Rubocop on files that have been added or modified on the current branch
              
          

        

      

        

  

    
    


        



  


  

        

          
          #!/usr/bin/env sh
        

        

          
          

        

        

          
          # If you don't already have a pre-push hook in your working copy, simply copy 
        

        

          
          # this into .git/hooks/pre-push in your working copy. If you already have a 
        

        

          
          # pre-push hook, you'll have to integrate it with your existing hook.
        

        

          
          

        

        

          
          function current_branch {
        

        

          
            git rev-parse --abbrev-ref HEAD
        

        

          
          }
        

  





    


  




    


          
    

      

        
        

          

              @johncarney
          

          

            
                johncarney
                / associations-using-with-deleted.rb
            
            

              Last active
              July 30, 2018 23:08
            

              
                Scans all associations in a Rails app and lists those that have a scope that uses `with_deleted`. Also lists potential uses of those associations in joins. The list of joins will likely include false positives.
              
          

        

      

        

  

    
    


        



  


  

        

          
          # ###########################################################################
        

        

          
          #
        

        

          
          # Probes all model associations looking for ones with a scope that call
        

        

          
          # `with_deleted`. Lists all such associations, along with the location in
        

        

          
          # source that `with_deleted` is called.
        

        

          
          #
        

        

          
          # Usage:
        

        

          
          #
        

        

          
          #  $ rails runner script/associations-using-with-deleted.rb
        

        

          
          #