ruby pry

This is a research note, mainly to consult with you. In addition to the beginning, there is no extra nonsense, and no other customer experience is required. Please do not complain about poor readability. 1. Add a colon Before a name or string to get a symbol object. You can also use string # to_sym, fixnum # to_sym, and string # intern. 2. Generally, the key for hash using symbol is called to save memory and improve execution efficiency. 3. Why can I save memory? String in

Ruby string forzen and unfreeze problem string processing is the first problem question to learn a new language When we look at the return of super people, remember there's a superman named freeze in it? This guy has a trick, drink water, and then blow everything out and then freeze. This is not Ruby, and freeze exists. The code I wrote today contains the following line:Strtmp = SD [0]. to_s.gsub! (/.../,

This article mainly introduces the use of circular statements in Ruby Tutorial, logic Loop statement is the basis of each programming language, need friends can refer to the Loops in Ruby are used to perform the same number of times as the code block specifies. This chapter details the looping statements that are supported by Ruby.

the same way, a car has four wheels, 200 horsepower, gas as a different tank and a capacity of 25 liters.A class is defined in Ruby: To implement object-oriented programming with Ruby, you need to first learn how to create objects and classes in Ruby. A class in Ruby always starts with the name of the keyword class

First of all, 2012 years, already have Ruby 1.9.3, why I want to install 1.9.2. Answer: Because I'm learning Ruby on Rails, the reference book Ruby on RAISL 3 tutorial is written according to 1.9.2, and Heroku server seems to support only Ruby 1.9.2 Start Ubuntu and install some related libraries with the following com

Contributed by Brian Leonard, maintained by Gail ChappellDecember 2007[Revision number: V6.0-6] In this tutorial, you use the ruby support in the netbeans ide To create and run a simple web application. the example shows how to create a ruby web log. you follow the basic workflow of creating the model, adding a controller, and creating a view. Contents - Tutorial req

Ruby's philosophy is based on a basic element that makes programmers happy. Ruby is very focused on the happiness of programmers and offers a number of different ways to implement it. Its metaprogramming capabilities enable programmers to write code that is generated dynamically at run time. Its threading capabilities allow programmers to have an elegant way of writing multithreaded code. Its hook method allows programmers to extend the behavior of a

Introduction to Ruby and Rails Ruby is an object-oriented, dynamic scripting language. Its syntax is flexible and provides a rich library of classes. Therefore, the efficiency of writing programs in Ruby is very high. Although Ruby was very early (born in Japan in 1993), Ruby