I just got a new machine and downloaded XCode. I used git to clone my ReactNative project from Github. I have everything ready to go. But when I run `react-native run-ios` I see xcrun: error: unable to find utility "instruments", not a developer tool ...

I am not using the full Xcode package on my laptop. Instead I'm using the command line tools, offered by Apple as a separate and much smaller install. I haven't had too many issues, aside from not being able to use the FileMerge program that ships with ...

If you ever want to render a partial but don't want an error thrown you can either check for the existence of the file first params[:controller]+"/sidebar" if File.exists?(RAILS_ROOT+"/app/views/"+params[:controller]+"/_sidebar.html.erb") %> or you ca...

Output .sql file for MySQL but without the drop table syntax before table name use the --skip-add-drop-table flag mysqldump -u root -p database_name --skip-add-drop-table --skip-lock-tables > database_name.sql

When mime types are registered they are placed in a hash constant EXTENSION_LOOKUP in the module Mime. For reference, the file with the relevant code is in rails/action_pack/lib/action_dispatch/http/mime_type.rb available on Github at https://github.com/r...