Difference between revisions of "Ruby on Rails"
From Hawk Wiki
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http://www.ruby-lang.org/en/documentation/quickstart/<br> | http://www.ruby-lang.org/en/documentation/quickstart/<br> | ||
| − | + | <h3>nil? empty? and blank?</h3> | |
.nil? can be used on any object and is true if the object is nil. | .nil? can be used on any object and is true if the object is nil. | ||
Revision as of 18:07, 16 September 2013
Beginner's tutorial
http://allaboutruby.wordpress.com/2006/01/09/installing-rails-on-windows-step-by-step-tutorial/
Ruby in 20 minutes
http://www.ruby-lang.org/en/documentation/quickstart/
nil? empty? and blank?
.nil? can be used on any object and is true if the object is nil.
.empty? can be used on strings, arrays and hashes and returns true if:
String length == 0 Array length == 0 Hash length == 0
