Like all the modern languages Ruby supports many different operators to its credit. Most of the operators in Ruby are in fact methods due to the object oriented nature of the language. This feature gives Ruby an edge over its competitors. Semantics... Read More

Ruby is the brain child of a Japanese programmer Matz. He created Ruby. It is a cross platform object oriented language. It helps you in knowing what your code does in your application. With legacy code it gives you the power of administration and... Read More

Ruby has a strong set of class libraries and it covers from a variety of domains such as thread programming, domains and data types. Also ruby is a new language and it also has additional libraries coming every day. Many of the new languages... Read More

Ruby language can be ported to many platforms. Ruby programs can be ported to many platforms without any modification to the source code. This feature made the language very useful and highly used by many programmers worldwide. Some of the platforms... Read More

Ruby is an object oriented language and every object oriented language tends to allocate many objects during execution of the program. Ruby deletes unallocated and unused objects automatically. This feature can be controlled by applying proper syntax... Read More

Ruby`s language is executed from the command line like most of the scripting languages. Programming and behavior language environment can be controlled from the interpreter itself. Some of the commands which are used are as follows ?d, -h, -e prog, ... Read More

Following are some of the environment variables used to control the behavior programming of ruby. While programming ENV object lists some of the current variables. RUBYLIB path searches for libraries. Make sure that you separate each path with colons... Read More

Define operator defines whether a passed expression is defined or not. If the expression is defined it returns the description string or null if the expression is not defined. If a variable is defined it gets initialized. If method_call is defined as... Read More

Methods in ruby basically perform two functions, named operation and the code present in the class which does a specific function. In Ruby all your algorithms live in methods which inturn is present on objects. Ruby does not have any provision for... Read More

This function calls a method and it can take any number of arguments and expr. Make sure that you put an asterisk or an ampersand before the expression. Last expr argument can be declared with a hash without any braces. If you want to increase the... Read More

Classes, variables, methods, constants and modules can be referred by ruby names. When you want to distinguish between various names you can specify that by the first character of the name. Some of the names are used as reserve words which should not... Read More

There are four different types of variables they are local, instance, global, and class. Variables can be used in the program without any declaration and they can contain data of any type. A local variable contains lower case characters followed by... Read More

A class variable starts with an @@ sign which is immediately followed by upper or lower case letter. You can also put some name characters after the letters which stand to be a pure optional. A class variable can be shared among all the objects of a... Read More

Unlike other programming languages ruby deals with extremely large numbers it doesn?t have any barriers. There is no limit on the extent of limit of number usage. Ruby performs this function with two different classes they are fixnum and bignum.... Read More

Float class is used whenever the function changes constantly. It acts as a sub class of numeric. They represent real characters by making use of the native architecture of the double precision floating point. Max is used whenever there is a huge... Read More

Interpolation is a very important process in Ruby. Interpolation is the process of inserting a string into a literal. There is only one way in which you can interpolate a string into a literal by placing a Hash (#) within {} open and close brackets.... Read More

Ruby code blocks form an important part of ruby and are very fun to use. With the help of this feature you can place your code between do-end and you can associate them with method invocations and you can get an impression that they are like... Read More

Actually two methods are available: puts writes with a newline print writes without a newline Read More

@name is an instance variable and @@name is a class variable Read More

Use =begin and =end. =begin def my_commented_out_method end =end You could use successive # signs, but that?s just tedious: # # def my commented_out_method # end # Read More

Curly braces {?} and ?do???end? Bonus: coding convention is to use curly braces if the code will fit on one line and ?do???end? syntax if the block contains multiple lines. Read More

?this is my string?.upcase If the string is in a variable: @my_string.upcase Note: The method: upcase! is another alternative. See next question regarding methods that end with an exclamation. Read More

The strip! method modifies the variable directly. Calling strip (without the !) returns a copy of the variable with the modifications, the original variable is not altered. Read More

Methods that return a boolean result are typically named with a ending question mark. For example: def active? return true #just always returning true end Read More

1) a constant begins with an uppercase letter and it should not be defined inside a method 2) a local must begin with a lowercase letter or the _ underscore sign 3) a global begins with the $ sign; an uninitialized global has the value of "nil" and... Read More

In ruby, we conventionally attach '!' or '?' to the end of certain method names. The exclamation point (!, sometimes pronounced aloud as "bang!") indicates something potentially destructive, that is to say, something that can... Read More

require 'rake' will cause ruby to look for one of the files rake.rb or rake.so in the directories listed in $:. The script in bin is called simply rake, not rake.rb, and so require doesn't even consider it. load, instead,... Read More