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Ruby comes with a program that will show the results of any ruby statements you feed it When the last argument in a method call is a hash, the curly braces may be omitted: Playing with ruby code in interactive sessions like this is a terrific way to learn the language.
Identical regexp can or cannot run in linear time depending on your ruby binary Def some_method (hash) p hash end some_method ({foo Neither forward nor backward compatibility is guaranteed about the return value of this method.
Ruby documentation welcome to the official ruby programming language documentation
Getting started new to ruby Start with our getting started guide Core classes and modules explore the essential classes and modules Ruby code can raise exceptions
Most often, a raised exception is meant to alert the running program that an unusual (i.e., exceptional) situation has arisen, and may need to be handled. This is a list of ruby releases The shown dates correspond to the publication dates of the english versions of release posts and may differ from the actual creation dates of the source tarballs. What’s here trigonometric functions ::cos
Returns the cosine of the given argument
Returns the sine of the given argument Returns the tangent of the given argument Returns the arc cosine of the given. Each of these methods takes optional argument format, which has zero or more embedded format specifications (see below).
This document contains frequently asked questions about ruby with answers This faq is based on “ the ruby language faq ” originally compiled by shugo maeda and translated into english by kentaro goto. 'ruby'} person # => {name Ruby} you can use a hash to give names to method arguments
