If you need to make iOS app icon assets from a photo, take a look at the [Make App Icon](https://makeappicon.com/) website and API. They will let you upload an image from a web browser (in exchange for an email) and then email you the assets you can just...

How to print the alphabet in Rails very easily. ("A".."Z").each {|letter| link_to letter, "/#{letter"} "A".upto("Z") {|letter| link_to letter, "/#letter"}

Regular Expression for finding absolute URLs in a bunch of text... like a log file. /(http:(.*?)\s)/

To specify which mode you'd like the rails console to boot up in, just provide the string without any flags. ./script/console production ./script/console test ./script/console development If you're on windows, remember the backslash "\" rather than for...

I usually change some of the default settings when I use the Paperclip plugin. For most of my projects I don't like having separate directories for each image that is uploaded. I prefer, in this instance, to put avatars of different sizes together under o...