Ruby

Metaprogramming is a ruby feature that can dynamically modify the language structure, such as the class structure, module structure, and instance variable information. You can evenProgramAdd and run the newCodeYou do not need to restart your

Ruby 192 + watir 3.0.0 Today, I encountered a strange problem: Use watir: IE. attach in the script to locate a new ie window, and always report an error. error message: Watir-classic-3.0.0/lib/watir-classic/ie-class.rb: 760: In 'rescue in

Yesterday I asked the first question in stackoverflow and was despised... This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form "... The problem is as follows: I have a CSV

Generally, the rdoc command is used for RubyProgramGenerate document Eg: Rdoc test. Rb To generate a document for the RB file of the entire project, you only need to run the rdoc command without the file name. Eg: Rdoc If there are classes and

1. How to solve the problem that garbled characters are displayed in the scite editor in Chinese. use NotePad to open the RB script, save it as, select the encoding mode as UTF-8, and save it. Open the script with scite. How can I make the scite

When I selected a language in the project in the early stage, I hesitated for a long time in ror and Django, and finally saw an evaluation.ArticleI also mentioned that Django is twice as efficient as Ror, so I chose Django. After a period of

The company uses its own proxy to access the Internet. Therefore, when rubygem is used, we cannot directly install the required packages, such as rails. On the internet, we checked a lot of methods for gem to use proxy, many people write that gem

In the university, a book is often placed in the course seat the night before, indicating that the position has been occupied. The next day, I came to this seat and opened the book for formal classes. in this phenomenon, Books Act as

Document directory Three methods for running Ruby: Comments and branches Keywords Identifier Data Type Operator Basic statement Exception   Three methods for running Ruby: Ruby-e 'Ruby statement' Ruby source file Irbirb is a ruby

Document directory Overload? Super Class variable (static variable) Class Method (static method) Singleton Method Access Control   Overload? Ruby supports default parameters, but there is no method overload in ruby. Ruby supports

Abstract: programming requires more knowledge, experience, judgment, and so on, which will not degrade due to age growth. In other words, programming can be done for a lifetime. This is slightly different from those of professional sports players. 　　

  1. Determine the installation environment Before installing jruby, determine the JDK version on the local machine. If you are using jruby 1.1.1, you can use JDK 1.4 (from the network, not personally proven). However, if you are using jruby 1.1.2,

# Encoding: UTF-8 # --------- dynamic execution # execute 2 + 2 puts eval "2 + 2" # = "4 # execute 15*2 (q indicates that double quotation marks will be calculated, Q indicates that single quotes are output as they are.) number = 15 code = % q {#

/* * $ ID: Ruby. c 571 23: 32: 14z elliotth $ * copyright (c) 2000-2001, thaddeus covert * copyright (c) 2002 Matthias Veit * copyright (c) 2004 Elliott Hughes * this source code is released for free distribution under the terms of the *

For the original (English version), see here. Here are some of my translations and technical background documents:In 1980, I started programming. 2 Basic, 400 steps (I do not know how to translate) 3 in 1988, I met Emacs and shared it with more than

1. system method. System is followed by the command string of the System Shell to be executed as the parameter. This method allows the system program to run in a sub-shell. This is a conventional method for booting external programs in the system

It may be a bit outdated, but the 12 tutorials provided by digitalmediaminute are still recognized as the classical required documents in the Ruby on Rails field -- A former student asked me a few days ago how I learned Ruby on Rails. the answer

I, Ruby Introduction:Ruby is "an interpreted scripting language for quick and easy object-oriented programming ". 1. interpreted scripting language Ability to make operating system CILS directly Powerful string operations and regular

Last week, I received a small Case to import some employee information to the database. I opened the Excel file in the email. The original file format is as follows: ID FirstName LastName123 Jerry Chou What I need to do is import the data to the

I recently read the book Programming Ruby. I just got started with Ruby and joined the Rails framework. This is definitely the development of agile web development. Ruby is a dynamic language mainly embodied in: You can directly use a variable