INTRODUCTION TO RUBY Presentation.

[Virtual Presenter] Good morning everyone! Today, we will be discussing a revolutionary programming language, Ruby, and the components that make it so powerful. We will learn how Ruby can be used to manipulate text files, handle files, execute system tasks, and support regular expressions. We will also discuss its characteristics, macro, inner workings, and how to configure the lexical analyser and parser. Let us now begin our discussion..

[Audio] Ruby is a powerful and versatile programming language that enables fast and effective coding. Unlike languages that require their source code to be compiled before running, Ruby is an interpreted language. It can be used for various tasks, including processing text files, handling files, using regular expressions, and executing system tasks. Ruby also stands out due to its natural and expressive syntax, making it easy for developers to express their ideas. At its core, Ruby is written in the C programming language, which is then translated to assembly language and further to 0s and 1s for computers to understand and execute..

[Audio] Ruby is a programming language, developed in the mid-1990s, which draws inspiration from languages like Python and Perl. Its inimitable features include its object-oriented structure - all things are objects - and its wide range of integrated data types, including strings, arrays, hashes, regular expressions and range objects. If you are interested in gaining proficiency in a powerful and versatile language for web development, why not join us to learn more about Ruby!.

[Audio] In this slide, we will discuss lexical analysis in Ruby using the oedipus_lex gem. The gem provides us with the ability to define macros for certain regular expressions which we might need to write repeatedly for the lexer. We can also define code under the inner keyword that the lexer can execute. Finally, we can define the lexer rules that will be used for lexical analysis..

[Audio] Ruby is a well-known scripting language. In order to create an addition program, a parser is needed to interpret the tokens that are generated by the lexer. Racc, an LALR(1) parser generator for Ruby, is used for this purpose. AddParser class is utilized, which contains the logic for the parser. Logic is placed inside the inner keyword and the header keyword of the parser. In conclusion, this allows for the creation of the addition program..

[Audio] Ruby, a programming language, consists of multiple components that collaborate seamlessly. We will discuss two of these elements, lexical analysis and parsing, and explain how they interact to parse any valid Ruby code. To illustrate, we will provide an example of a code which makes use of both components. Let's begin!.

[Audio] Good morning everyone. This slide is about an introduction to Ruby and explaining its components. We are briefly going to discuss two tools that are used to write Ruby programs- Lexer and Parser. Lexers, also known as scanners, are responsible for understanding and breaking down text into meaningful blocks. Parsers, on the other hand, work on these blocks to recognize patterns and produce an organized structure. Oedipus Lex does not have a command line tool like rexical for automatically generating a lexer from the logic specified, but rather it has a bunch of rake tasks defined for doing this job. Once the Rakefile is created with the code inside it, running rake parser will generate two files - lexer.rex.rb and parser.racc.rb. These two files will contain the classes and logic for the lexer and parser respectively. Finally, you can use your newly written lexer and parser with a ruby adder.rb text.txt command to get the desired output. Thank you..

[Audio] Ruby is a powerful Object-Oriented programming language which allows for efficient and fast code generation. These code generators can be divided into two main categories - dynamic and static. Dynamic code generators are loaded and executed at runtime and then converted into Ruby code. Static code generators, in contrast, are used to generate full Ruby code based on provided data. When using either type of code generator, it is imperative that the include paths for the Ruby interpreter are correctly managed, to ensure that the static code is correctly imported..

[Audio] Ruby is a general-purpose programming language, capable of tackling many types of tasks. It offers a range of features such as web development and system administration. Code optimization is a method of making code more efficient and less complex. This can lead to faster performance, making code easier to read, track and debug errors, and saving computational power. Ruby is the ideal language for application that require top performance, due to its support for code optimization..

[Audio] We will be looking at two methods to print our desired output in Ruby: the 'puts' and 'print' functions. 'Puts' adds a new line after the string, whereas 'print' does not. For example, using 'puts' and 'print' to print "Hello World!" would result in "Hello World!" followed by a new line for 'puts', and "Hello World!Hello World!" for 'print'..

[Audio] Our slide today is about Strings in Ruby and to get started let's take a look at how to create strings in Ruby. You can create strings in Ruby using both single and double quotes. Double quotes allow you to interpolate values into the string, but single quotes do not. Certain escape characters, such as the '\n' character to denote a new line, must be enclosed in single quotes. So it's important to remember the difference between these two methods when building your strings..

[Audio] Arrays in Ruby are an important element of the Ruby language. They contain multiple values, giving us the ability to easily access and manipulate those values. Their use is similar to strings, in which a quotation or bracket notation is used to create an object. Arrays offer greater control and a more effective manner for interacting with multiple values..

[Audio] Ruby is a powerful programming language and this slide discusses how to use it to calculate the area of a rectangle. To do this, we need to use logic to apply the relevant formula. Converting the string to a float data type is important as it allows both integer and decimal values to be stored. 'Gets' is used to display a message to the user, 'puts' to take input from the user and '.to_f' to convert a value to a float type. Three variables are used in this calculation: 'l' (length), 'w' (width) and 'area' (the product of the two values which is the area of the rectangle)..

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