ruby facets

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 on Rails is a relatively new framework for WEB applications, and its goal is to provide an easy path for application development. In short, it makes life, or at least Web development, easier. In fact, proponents of the framework claim that the productivity of Ruby on Rails developers is up to 10 times times the use of the traditional Java EE framework. While this sentence creates considerable controver

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

If you are a student, you should be C, C ++ and Java. There will also be some VB, or C #/. NET. You may have developed some Web pages. You know some HTML, CSS, and JavaScript knowledge. In general, it is difficult for us to find that some students are able to master languages beyond these languages. This is a pity, because there are many programming languages that can make you a better programmer. In this article, I will tell you why you must learn Python or If you are a student, you should be C

Install Ruby in iOS Mac A series of questions raised by EasyIOS: the installation and use of CocoaPods in the previous article explains why cocoapods is used, but cocoapods needs a Ruby environment to be installed, to install the Ruby environment, you must first install Xcode (because of the xcode development tool, which helps us install the Development Kit requi

Out of curiosity about Ruby, good morning. Let's take a look at it. The syntax is concise and it's a good language, Have time to learn more Http://www.ruby-lang.org/zh_CN/documentation/ help documentation --- The following installation configuration is reprinted I. Preparations before installation: 1. Download RUBY: http://www.ruby-lang.org/en/downloads/ 2. Download RDT (

We are preparing to build a ruby development environment because we are interested in Ruby recently. Feel the power of Ruby. Some problems have been encountered during the environment setup process. We have recorded the problems in the following article and offered our solutions. Before getting started, I am using the environment

Both PHP and Ruby on Rails have a large number of their own loyal fans. Comparing the two is a difficult choice in itself. Whoever wins will attract the saliva of the other's fans. By this effect, developers often seem hesitant to choose between the two. Although the starting point of this article is a comparison, it is not a one-sided-style singing and singing, but a dialectical synthesis of contrast. No good or bad, suitable for their own is the bes

Ruby supports a modern language of a rich array of operators. Most operators are actually method calls. For example, A + B is interpreted as a, + (b) The method of the object referenced by the variable is called a parameter with B as its. For each operator (+-*/% * * | ^ Ruby Arithmetic operators: Assuming variable a=10, variable b=20: Ruby com

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.Ruby While statement:Syntax: While conditional [do]CodeEnd Executes code when the condition is true. The while loop condition is a reserved word in the code, a newline, a backslash (\), or a semicolon separated.Instance: #!/usr/bin/ruby $i

Ruby supports a modern language of a rich array of operators. Most operators are actually method calls. For example, A + B is interpreted as a,+ (b) The method of the object referenced by the variable is called a parameter with B as its. For each operator (+-*/% * * | ^ Ruby arithmetic operators: Assuming variable a=10, variable b=20: Ruby comparison operat

First, you have to check if Ruby is installed. In the shell prompt entered prompt (here is expressed as "%", so don't typing%), typing % Ruby-v (-V tells the interpreter to print out Ruby version) and then knocks in the carriage. If Ruby is installed, you will see a message similar to the following: %

Ruby on Rails is shaking the whole Web development landscape. Let us first understand the underlying technology: Ruby is a free, simple, intuitive, extensible, portable, and interpreted scripting language for fast and simple object-oriented programming. Like Perl, it supports many of the features of working with text files and performing system administration tasks.Rails is a complete, open source Web fram

This article mainly introduces the concept of class objects in Ruby, is the basic knowledge of Ruby learning, need friends can refer to the Object-oriented programs involve classes and objects. A class is a blueprint that is created from an individual object. In object-oriented terms, we say that Xiaoming's bike is an object instance called a bicycle class. Examples of any vehicle. It

Ruby languages are often praised for their flexibility. As Dick Sites says, you can "program for programming." Ruby on Rails extends the core Ruby language, but it is Ruby itself that makes this extension possible. Ruby on Rails uses the language's flexibility so that it is

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

Poor foundation. I just got started with Linux O M. I hope I can learn about a poor Linux O M Foundation. I just got started with Linux O M. I hope I can learn a message for Linux O M: perl too old, the written code seems to be hard-working, and now it has basically stopped evolution. although it has been around for many years, php is not suitable for O M, in the end, there will be many people who support python, probably because of the first advantage of python, but

First, you must check whether Ruby has been installed. At the shell prompt ("%" here, so do not enter % ), % Ruby-V (-V tells the interpreter to print out the ruby version) and press Enter. If Ruby is installed, you will see information similar to the following: % Ruby