If you want to write to a file using Ruby: Open the file in write mode (“w” flag) Use thewritemethod to add data to the file If you didn’t use the block version, remember toclose Example: File.open("log.txt", "w") { |f| f.write "#{Time.now} - User logged in\n" }...
Ruby is a popular object-oriented programming language. You can use Ruby to write anything from simple scripts to complex web applications. Open your favorite text editor and follow these tutorials to start exploring Ruby.
I had an idea the other day, to write a basic search engine – in Ruby (did I mention I’ve beenplaying around with Rubylately). I am well aware that there are perfectly adequate ruby crawlers available to use, suchRDigor Mechanize. But I don’t want to use any libraries for the h...
How to Write a Web Application in Rubycuts through the magic and shows you exactly how every part of a web application does its job. Anebookandscreencastwalk you through the process of building a complete web application from scratch — in bare-bonesRuby, using code from thestandard library—...
# File.open('out.htm', 'w') { |f| f.write x.body } Sending the value of button1 is optional in this case, but sometimes this value is checked in the server side script. One example is when the coder wants to find out if the form has been submitted – as opposed to it being...
In a simple Ruby program, like the one in the tutorialHow to Write Your First Ruby Program, you can use comments to give additional detail about what’s happening in each part of the code: greetings.rb # Display a prompt to the userputs"Please enter your name."# Save the input they ...
Every individual book is an object & you can make many objects like it thanks to theBookclass. That’s the point of creating classes, they are reusable blueprints for your Ruby application. Now: You’re going to learn how to write your own classes so you can start writing OOP code, tod...
/usr/bin/env ruby print "What is your name? " name = gets.chomp puts "Hello #{name}!" Open a command line window and navigate to your Ruby scripts directory using thecdcommand. Once there, you can list files, using thedircommand on Windows or thelscommand on Linux or OS X. Your...
To enable full debugging in your programs, run the compiler with -g to write a symbol table and other debugging information into the executable. To start gdb on an executable named program, run Linux系统上的标准调试器是gdb;还可以使用诸如Eclipse IDE和Emacs等用户友好的前端。 为了在程序中启用...
This is the best method to write text into a file in Scala. Using the Java NIO package, we can write to a file in a very concise manner, that is, typing less code. Example 1: import java.nio.file.{Paths, Files} import java.nio.charset.StandardCharsets object MyObject { def main(...