DZone Snippets: Jrm02t's Code Snippets http://snippets.dzone.com/posts Wed, 20 Aug 2008 20:22:49 GMT DZone Snippets: Jrm02t's Code Snippets Mask all but last 4 digits http://snippets.dzone.com/posts/show/3049 If you need to mask all but the last 4 digits of a nubmer - like a credit card number - this helper works nicely. <br /> <br />Just pass it a number or string. <br /> <br /><code> <br />def mask_number(number) <br /> number.to_s.size < 5 ? number.to_s : (('*' * number.to_s[0..-5].length) + number.to_s[-4..-1]) <br />end <br /></code> Tue, 28 Nov 2006 08:51:41 GMT http://snippets.dzone.com/posts/show/3049 jrm02t () Check for under age http://snippets.dzone.com/posts/show/3048 This function can be used to check if a user is underage. <br /> <br />Note: This is using rails core extensions. It'd need to be modified a bit for a pure ruby implementation. <br /> <br /><code> <br />def underage?(birthday) <br /> 18.years.ago < birthday <br />end <br /></code> Tue, 28 Nov 2006 07:00:07 GMT http://snippets.dzone.com/posts/show/3048 jrm02t ()