# Section 7: A Longer ExampleclassMyRationaldefinitialize(num,den=1)# second argument has a defaultifden ==0raise"MyRational received an inappropriate argument"elsifden <0# notice non-english word elsif@num= - num# fields created when you assign to them@den= - denelse@num= num# semicolo...
Example 1: Print a Message 10 Times Using until Loop =beginRuby program to print a message 10 times using until loop=endnum=0# Using an until loop to repeat the messageuntilnum==10puts"Hello there! Message from Includehelp.com! Happy learning!"num+=1# Increment the counterend ...
Python is probably the programming language that is compared to Ruby the most, since it can be used for many of the same tasks as Ruby. Because they are so similar, it can be hard for people who are just starting out to decide which one to learn. As an example, both are server-side...
'whenTime.now.hour>21puts"It's too late"elsesong.playend# goodcasewhensong.name=='Misty'puts'Not again!'whensong.duration>120puts'Too long!'whenTime.now.hour>21puts"It's too late"elsesong.playend caseandswitchwhenandelsekeywords are labels (compiled in the C language, they are literall...
For example, sqrt is the module function defined in Math module. It can be called in the following way: Math.sqrt(4) or include Math sqrt(4) To define module functions, use: void rb_define_module_function(VALUE module, const char *name, VALUE (*func)(), int argc) In addition, ...
[ [nd_head], [nd_next].. ] (length: [nd_alen]) # | | # example: [1, 2, 3...
Ruby’s Boolean operators are built into the language and are not based on methods: classes, for example, cannot define their own && method. The reason for this is that Boolean operators can be applied to any value and must behave consistently for any kind of operand. Ruby defines special ...
When you’re dealing with dynamically named methods based on a pattern and you can’t reasonably expect to be able to predict all the possible method name combinations. Ruby’s own Active Record dynamic finders are probably the best example of this. For example, if you wanted to find a use...
This example program will perform several HTTP requests concurrently: require 'async' require 'net/http' require 'uri' Async do ["ruby", "rails", "async"].each do |topic| Async do Net::HTTP.get(URI "https://www.google.com/search?q=#{topic}") ...
Overview Ruby on Rails is an open source web application framework which runs on the Ruby programming language. It is a full-stack framework: it allows creating pages and applications that gather information from the web server, talk to or query the data