conversations.from: human
conversations.value: Do you know a description for a book titled Ruby Quick Syntax Reference about Freelance, Web, Developer with the genre: Computers & Technology, Programming?
conversations.from: assistant
conversations.value: the author is a Freelance Web Developer based in the vibrant town of Milton Keynes, specialising in PHP, MySQL, SASS, Javascript and much more. Matt is an adaptive developer who will adjust and adapt to any development project, and will help you reach your final goal.
conversations.from: human
conversations.value: Do you know the first five paragraphs for this book?
conversations.from: assistant
conversations.value: Ruby Quick Syntax Reference
  Ruby's Standard Error Output, this is normally mapped to the running console, however can be remapped to a log file to keep track of errors (rather than standard output) separately.
  The Standard Input, including the input passed in to a script and any input received during the running of the application.
  This is the global instance of Binding that is mapped to the object for the main method when running Ruby.
  The TRUE, FALSE, and NIL constants are aliases for true, false, and nil used previously within Chapter 7.
conversations.from: human
conversations.value: Add another sentence about Standard, Output, used, during, running.
conversations.from: assistant
conversations.value: Ruby Quick Syntax Reference
  Ruby's Standard Error Output, this is normally mapped to the running console, however can be remapped to a log file to keep track of errors (rather than standard output) separately. 
  The Standard Input, including the input passed in to a script and any input received during the running of the application. 
  The Standard Output, which is used by default to output any data to the console during the running of an application (such as the output from a puts statement). 
  This is the global instance of Binding that is mapped to the object for the main method when running Ruby. 
  The TRUE, FALSE, and NIL constants are aliases for true, false, and nil used previously within Chapter 7.
conversations.from: human
conversations.value: Do you know five more paragraphs?
conversations.from: assistant
conversations.value: You will notice here, that in the proc example, the execution stops after calling the proc method as the return, passing control directly back to the calling statement rather than the internal proc; whereas the Lambda returns to the internal method, which then itself returns further on.
  Finally we utilize a block to pass each of the selected DVDs through, which outputs the DVDs that we can watch.
  Within Ruby, as well in almost all other object-oriented and procedural-based programming languages, we have the option to throw and handle errors and exceptions within our code. Some of these errors and exceptions we will want to generate ourselves, such as when we have detected some abnormal behavior within the system, whereas other errors and exceptions will be thrown from the Ruby language itself, or other third-party libraries.
  For example, we have built a system that allows some text and a photo to be uploaded to an external service (for example, Twitter). We will want to throw our own errors if the user's message is too long for the service, but likewise we will want to handle a network or communications error that Ruby will throw if we fail to connect to this external service.
  In Ruby, an error is thrown by the means of an exception, which can be handled by catching or raising the error.
conversations.from: human
conversations.value: Do you know the last three paragraphs?
conversations.from: assistant
conversations.value: The preceding example is a complex example; however we can step through this in sections, beginning with the initialize of a new object of our class:
  This section simply sets an instance variable (@value) that can be accessed (read/written to) by our class. This allows our constructor method to have a value passed to it, which is stored within the object for further processing.
  This is highly useful, as we have now written some dry (don't repeat yourself) code that can be easily implemented whenever we want to check a value against a predefined list of allowed values. This could be used to check Countries, County/States, or any other number of predefined lists of values.