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Ruby Tutorial

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Ruby Methods

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Ruby Classes and Methods

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Ruby Arrays

• Ruby Arrays
• Creating Array with Array.[](*args)
• Creating Array with Array.new(size, obj)
• Creating Array with Array.new(Array_object)
• Creating Array with Array.new(size){|index|}
• Creating Array with & Operator
• Creating Array with * Operator
• Creating Array with + Operator
• Creating Array with - Operator
• Accessing Array with Array.at() Method
• Accessing Array with Array.fetch() Method
• Accessing Array with Array.take() and Array.drop() Methods
• Accessing First/Last Element with Array.first and Array.last
• Deleting with Array.pop and Array.shift Methods
• Removing with Array.delete() and Array.delete_at()
• Removing with Array.compact and Array.uniq
• Finding Array Length
• Adding with << Operator
• Array Element Assignment (index)
• Array Element Assignment (start, length)
• Array Identity Check
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• Creating 2D Arrays
• Ruby Array Methods

Ruby Sets

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Ruby Strings

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Ruby Classes & Objects

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Ruby Hash

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Ruby Tools

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Ruby Functions

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Ruby Built-in Functions

• Ruby alias vs alias_method
• Ruby at() Function
• Ruby clear() Function
• Ruby assoc() Function
• Ruby push() Function
• Ruby pop() Function
• Ruby reverse() Function
• Ruby reverse! Function
• Ruby concat() Function
• Ruby to_s() Function

Misc.

• Ruby Date & Time
• Ruby Threads
• Ruby Multithreading
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• Ruby Exception Handling
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• Ruby Exception Class Methods
• Ruby CGI Programming
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• Ruby Database Access
• Ruby Sending Email
• Ruby Wait
• Ruby Custom Error Logger

Ruby Programs

• Basic Programs
• if/else Programs
• case Statement Programs
• Looping Programs
• Classes & Objects Programs
• User-defined Functions Programs
• Blocks Programs
• Modules and Mixins Programs
• Strings Programs
• Arrays Programs
• Constructors/Destructors, Inheritance Programs
• Date and Time Programs
• Set Programs
• File Handling Programs
• Threading Programs
• Hashes Programs
• Directories Programs

# Ruby program to get the flattened 1D array

arr = ["RAM","KRISHNA","SHIV","GANESH",["KRISHNA","RAM", "MOHAN"]];

fArr = arr.flatten();

print "Flattened 1D array:\n#{fArr}";

Flattened 1D array:
["RAM", "KRISHNA", "SHIV", "GANESH", "KRISHNA", "RAM", "MOHAN"]