ruby images

Transferred from: http://www.jb51.net/article/48802.htmRuby is filled with a series of hidden variables, and we can get some interesting information from these pre-defined global variables. Global process variables$$ represents the currently running Ruby process.>> $$= 17170We can kill it ourselves from the current process.>> ' kill-9 #{$$} '[1] 17170 killed IRB$? Represents the state of a recent child process>> ' echo Hello '= "Hello\n">> $?= = #>> $

Ruby is filled with a series of hidden variables, and we can get some interesting information from these predefined global variables. Global process variables $$ represents the currently running Ruby process. Copy Code code as follows: >> $$ => 17170 We can kill ourselves from the current process. Copy Code code as follows: >> ' kill-9 #{$$} ' [1] 17170 killed IRB $

Glide allows you to view images and save images to your mobile phone. glide allows you to view images. Two Methods: recommended method 1Method 1 downloadOnly Create an ImageActivity Public class ImageActivity extends AppCompatActivity {private static final String TAG = "ImageActivity"; private ImageView iv; Bitmap bitmap; private String mUrl; @ Override protected

Scenario: 1. When you need to take part of the image area as the background of a widget. 2. You need to tile the image to a large area so that it can be automatically zoomed in. 3. or you need to merge images. Code: CDC sdc; CDC ddc;sdc.CreateCompatibleDC(NULL);ddc.CreateCompatibleDC(NULL);CBitmap destBmp;destBmp.CreateCompatibleBitmap(CClientDC(NULL),width,height);sdc.SelectBitmap(m_Bitmap);ddc.SelectBitmap(destBmp);ddc.BitBlt(0, 0, width, height,

($new, $img, 0,0,0,0, $WW, $hh, $IW, $ih);pathinfo-return the file path information$path = PathInfo ($i, pathinfo_dirname). ' /s_ '. PathInfo ($i, pathinfo_basename);Imagejpeg ($new, $path); imagejpeg-output image to browser or file.Imagedestroy ($new); Imagedestroy-destroying an imageImagedestroy ($IMG); Imagedestroy-destroying an image}////////define thumbnail function End//////////Application of PHP images-generate

A single point in an image is called a pixel. Each pixel has a value called a pixel value, which indicates the intensity of a specific color. For a black-and-white image, the color of each pixel is represented by a binary value of 1. Then, the color is only "1" and "0. That is to say, either black or white. For Grayscale Images, if they are not expressed by means of merging, they can be expressed as (0), (123), (255 ). If it is expressed by color synt

the result images, it is based on 3 fixed vertices of the transformation to find the Transformation Matrix, we need three pointsFrom Input Imageand their corresponding locations in Output ImageThen Cv2.getaffinetransform'll create a 2∗3 2*3 matrix which is to being passed to Cv2.warpaffine img = cv2.imread (' drawing.png ') rows,cols,ch = Img.shape # Specifies three points in the original artwork and their position in the output picture pts1 = Np.fl

Ruby on Rails has always been popular in China and the world. You will see stacked Ruby and Java in Java websites, search engines, and hot forums, and the two of them seem to be incompatible with each other. Even oreilly, a master who has been supporting Java for many years, began to publish Ruby books to lead people out of Java. The scope of this discussion is g

Summary In the last few years, scripting languages have become increasingly popular in Web application programming. This paper attempts to find the differences, advantages and disadvantages in today's three most popular languages: PHP, Python, and Ruby. Obviously, they have their own views and support, so it is a difficult task to state objective facts and to satisfy a scientific approach. These three languages will evaluate the history, evolution,

The customer's server is Ubuntu + apache2 + ruby on rails. Currently, some pages on the customer's server always report the 500 error. The ruby language is only known and has not been studied in depth. I have never set up a ruby server environment, and it is strange that the customer uses ubuntu as the server. After installing

, resource URLs are identified by primary keys, which are usually their database IDs. However, this may cause unfriendly reading. FriendlyId can easily convert your URL to make it more friendly and easier to remember. In this way, your code is rarely changed in your web application.Simple Form Form is the core element of each web application. if there is any interaction with the user, a typical approach is to use web forms. simple Form helps simplify this Simple but repetitive work. by using DSL

Build a Ruby On Rails platform using CentOS System CentOS6.5 x64 Ruby On Rails is an open-source Web framework written in Ruby, similar to J2EE and PHP. Ruby On Rails is a very beautiful Web development framework and incorporates the essence of agile development: conventions are greater than configurations. You will fi

Introduction: Assuming that you are a C + + developer, you need to quickly perform some prototyping with Ruby. When you pick up a ruby reference book (such as pickaxe) or browse the Ruby Web site, you'll see some familiar constructs such as class declarations, thread support, and exception handling. Just when you think you know how

Getting started with image processing in Ruby on Rails, rubyrails Images can be said to be a vital part of any application. From social networks to a simple Bug tracker, images play an important role. However, managing images is not an easy task. It takes a lot of time and effort to plan

Use Eclipse for Ruby development easily-Linux general technology-Linux programming and kernel information. The following is a detailed description. [Indent] About three years ago, developerWorks released the "Ruby Development Tools plug-in using Eclipse", which introduced some features provided in the Ruby Development Tools (RDT) Plug-in of Eclipse, it was V0.5 a

One: Website and its blog: 1.http://ihower.tw/training/ The Ruby on Rails Learning Network is a professional website that communicates to learn about the knowledge of Ruby on Rails. 2.http://www.javaeye.com/wiki/rails_weeklyRails Weekly One question 3.http://www.5iror.com/Ihower's Tutorial 4.Http://railstutorial.org/book An English course 5.Http://www.javaeye.com/wiki/rails-everydayEvery day a dose

Ruby is an object-oriented metaprogramming language that surprised many developers and even raises the question: is there a really better language than Java and C? This article will give a preliminary discussion on the ruby language and try to answer this question. 　　I. Introduction Have you ever heard of Ruby? Today, it has become a popular topic in the software

This article focuses on the deployment of Ruby on Rails in Docker, Docker is the hottest virtual machine in the present, and the Ruby on Rails deployment described in this article takes advantage of the cool, automated approach of rake in Ruby, Need friends can refer to the following Basic Rails Applications Now let's start with a basic rails application. For a

Before you start About this tutorial Ruby on Rails (rails) is a full-stack WEB application framework written in Ruby, and Ruby is a rich, free, extensible, portable, object-oriented scripting language. Rails is very popular among WEB application developers. With it, you can quickly and efficiently develop Web applications and deploy them to any web con

, doesn't it?However, Ruby is also a very good language. Ruby is one of the best programming languages to learn. And there's a huge, vibrant ruby exchange in every major city around the world. The average Ruby developer's salary is $102,000, and Amazon is one of the best employers.If you plan to develop software, hardw