sinatra ruby

Parse Ruby variables in detail This article describes how to parse the variables in Ruby in detail. It is one of the most basic knowledge in Ruby learning. For more information, see The location where the variable holds the data of the program to be used. Ruby supports five types of variables. In the previous section,

Many times we will find that the real production environment is not a lot of external network, only intranet environment, this time we need to install Ruby, we can not provide the Yum command to install online, this time we need to download the installation package for offline installation. This article is mainly about if you install ruby offlineBefore installing, let's briefly introduce Rubyfirst, Introduc

Document directory Add a MySQL database Add a java db (Derby) Database Download Ruby support If you have not installed the netbeans 6.0 IDE, open the netbeans ide 6.0 download page and download the IDE versions that contain Ruby support. If you already have netbeans ide 6.0, but there is no ruby support in netbeans ide 6.0, follow these steps to add

Ruby on Rails is a framework that makes it easy for you to develop, deploy, and maintain Web applications. October 2015 programming language leaderboard Ruby entered the top 10 of the Tiobe leaderboard, which shows how popular it is. This article will help you open the door to Ruby on Rails web development and help you get to the world of

Global variables start with $.ProgramBefore initialization, the global variable has a special value nil. Special variables starting with $ and with a single character are listed here. for example, $ contains the process ID of the Ruby interpreter, which is read-only. here are the main system variables and their meanings (details can be found in the ruby reference manual ): $! Last error message $ @ Er

Ruby is a scripting language for simple and fast object -Oriented programming (object-oriented programming). Simple Introduction Ruby is open source and available on the web for free, but requires a license . Ruby is a universal, interpreted programming language . Ruby is a

Basic Learning Ruby--Basic Learning (i) Project folder description Ruby-Basic Learning (ii) foreign key configuration for cascading deletions Ruby-Basic Learning (c) Setting time in China timezone Ruby--Basic Learning (iv) Timedate processing Ruby-Ba

How to Improve Ruby On Rails Performance 1 Introduction to Introduction It is always said that Rails is so slow that it has become a common issue in the Ruby and Rails communities. However, this statement is not true. As long as you use Rails correctly, it is not difficult to increase the running speed of your application by 10 times. So how can we optimize your application? Let's take a look at the followi

Author: published by tianen Beijing Aerospace Publishing House. Ruby is a language with the word "Ruby ". Rails is a technical framework. Its word is "Rails ". The meaning of "Ruby on Rails" is that it is full of Ruby rails. Rails is a B/S structure programming framework based on the

Ruby is an interpretive, object-oriented, dynamic type of language. The strategy adopted by Ruby is to find a balance between flexibility and run-time security. With the advent of the rails framework, Ruby also blockbuster around 2006 and also guides people back to the fun of programming. Although Ruby is not as effici

1. The following two reasons are causing your Rails application to slow down: Ruby and rails should not be used as the preferred place for Ruby and rails. (with Ruby and Rails doing a job that's not good for doing) Excessive memory consumption leads to a lot of time for garbage collection. Rails is a delightful framework, and

A summary of some basic syntax knowledge points in Ruby. Let's write a simple ruby program. All Ruby source files will use the extension. rb. Therefore, put the following source code in a test. rb file. #!/usr/bin/ruby -wputs "Hello, Ruby!"; Here, if you have installed the

Let's write a simple ruby program. All Ruby source files will be in extension. RB. So, put the following source code in a test.rb file. #!/usr/bin/ruby-w puts "Hello, ruby!"; Here, suppose you have a Ruby interpreter installed, which can be found in the/usr/b

Ruby programming language is developed by the Japanese pine line, is a simple and fast object-oriented programming language, today mainly talk about the ruby framework--ruby on Rails (http://www.maiziedu.com/course/ruby/), Maybe some friends don't like Ruby, but as a languag

! Preview· the development trend of language must be the combination of static and dynamic, flexible and economic· Perl is obscure, Python is elegant and clear, Ruby is smart, and PHP is simple· Perhaps elegance comes from the attention to detail and norms.· RoR with Ruby, it's like a Nao with a cat, and instantly brings out Java and the. NET Elephant Figure? Questions What are the characterist

Like Perl and Python, Ruby has excellent functionality and is a powerful text-processing language. This article gives a brief introduction to Ruby's text-processing capabilities and how to use Ruby to effectively process text data in different formats, whether it is CSV or XML data. Ruby string Common Abbreviations CSV: comma-separated values

[Note] This is an article praising Ruby.Article!!! It's not too late Note: This is an article about subjective consciousness. It does not aim to persuade you to use or not use ruby, or any other technology. The Environment involved in this article is web development, rather than general programming. I want to use this article to explainCommunitySome Opinions on Ruby and remind people to face new things wi

Brief introduction Ruby is an extremely rich, free, simple, extensible, portable, object-oriented scripting language. Recently, it has been widely popular in the Web field. This is partly due to the very powerful WEB application development Framework Rails,rails is written in Ruby. Rails, also known as Ruby on Rails (ROR), as the name suggests, provides a very p

Explore some methods to optimize Ruby on Rails performance, rubyrails 1. There are two reasons for slowing down your Rails application: Ruby and Rails should not be used as the preferred choice. (I used Ruby and Rails to do something I was not good) Excessive memory consumption leads to a large amount of time for garbage collection. Rails is a pleasant fram

Ruby is not very popular, so it is difficult to draw conclusions at present. However, from the perspective of recruitment, there are still a few companies using Ruby. From the perspective of salary, Ruby is quite high compared with others, the main reason may be that there are fewer students. programming languages are universal. It is not a bad thing to learn a l