Difference between revisions of "Ruby on Rails"
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(Created page with "Beginner's tutorial<br> http://allaboutruby.wordpress.com/2006/01/09/installing-rails-on-windows-step-by-step-tutorial/<br> Ruby in 20 minutes<br> http://www.ruby-lang.org/en/doc...") |
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Ruby in 20 minutes<br> | Ruby in 20 minutes<br> | ||
http://www.ruby-lang.org/en/documentation/quickstart/<br> | http://www.ruby-lang.org/en/documentation/quickstart/<br> | ||
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| + | --nil? empty? and blank?-- | ||
| + | .nil? can be used on any object and is true if the object is nil. | ||
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| + | .empty? can be used on strings, arrays and hashes and returns true if: | ||
| + | |||
| + | String length == 0 | ||
| + | Array length == 0 | ||
| + | Hash length == 0 | ||
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
