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, external fonts support,JPEG support, and an upgrade to FPDF version 1.53. Sylvain Lafleur contributed the initial port of the bookmark module. Thiago Jackiw contributed the EPS module, which is ported from the PHPModule by Valentin Schmidt. Thanks also to the others who have contributed bug reports and fixes.Download Ruby FPDF You can download Ruby FPDF below.

Simple implementation of the Bubble Sorting Algorithm and Ruby version, and the Bubble Sorting Algorithm ruby Algorithm principle: Compares adjacent elements. If the first is bigger than the second, exchange the two of them.Perform the same operation on each adjacent element, from the first to the last. At this point, the final element should be the largest numbe

Tags: Environment online oca latest USR variable hint Visio RSAUpgrade Ruby to the latest version under Mac 在安装其他软件的时候 发现ruby的版本过低，现在准备升级夏ruby。View Ruby version命令：ruby --

Https://github.com/sstephenson/rbenv Check out rbenv into ~/.rbenv .$ git clone https://github.com/sstephenson/rbenv.git ~/.rbenv Add to your for access to the ~/.rbenv/bin $PATH rbenv command-line utility.$ Echo ' Export path= ' $HOME/.rbenv/bin: $PATH "' >> ~/.bash_profileUbuntu Desktop Note: Modify your ~/.bashrc instead of ~/.bash_profile .Zsh Note: Modify your ~/.zshrc file instead of ~/.bash_profile . Add to rbenv init your shell to enable shims and autocompletion.$ Echo ' eval ' $

RVM is a command-line tool that provides the management and switching of a convenient, multiple-version Ruby environment. https://rvm.io/ If you are going to learn ruby/rails, RVM is one of the essential tools. All commands here are operated under user privileges, and any command is best not to use sudo.RVM Installation $ curl-l Get.rvm.io | Bash-s Sta

Solve cocoapods installation failure, prompt requires Ruby version> = 2.2.2, cocoapodsruby The procedure is as follows: rvm install ruby-2.2 However, an error was reported. I forgot the details, but it was a problem with permissions and brew. Then I switched to brew: // Clear the original brewrm-rf/usr/local/Cellar/usr/local /. git brew cleanup // install

Ubuntu upgrade Ruby to 2.1 1. Pre-installation update:sudo apt-get -y updatesudo apt-get install cmakesudo apt-get install -y build-essential zlib1g-dev libyaml-dev libssl-dev libgdbm-dev libreadline-dev libncurses5-dev libffi-dev curl git-core openssh-server redis-server postfix checkinstall libxml2-dev libxslt-dev libcurl4-openssl-dev libicu-dev mysql-client libmysqlclient-dev libreadline6-dev 2. Download and install Ruby:curl --progress http:/

JRuby 1.7.14 Released, this version is now available for download: Http://www.jruby.org/download The JRuby 1.7 is designed to be compatible with the Ruby 1.9.3 version, and the improvement record is as follows: Solved 30 issues. Fixed a potential memory leak problem with the Jar file source Because the Rails application is slow to start, the default is to di

1, download the latest version of Rubyinstaller and install http://rubyinstaller.org/downloads/Set the path as shown, and I'll have enough of all the options when I install, eliminating the need for any later configuration hassles.2, after the installation can go to the Cmd command to enter Ruby-v, and see the version information shown that the installation was s

GEM::INSTALLERROR:NET-SSH requires Ruby version >= 2.0Modify Gemfile, change versionGem'Unicorn'group:test,:d evelopment do gem"rspec-rails",">= 2.5.0"Gem'Factory_girl','2.6.4'Gem'factory_girl_rails','1.7.0'Gem'Faker','1.1.2'Gem'Forgery','0.5.0'Gem'magic_encoding','0.0.2'Gem'Email_spec','1.4.0'Gem'Net-ssh','~> 2.0'Gem'Capistrano','~> 2.15.7'Gem'capistrano-rbenv','1.0.5'Gem'Rb-readline','0.4.2'End Problems w

. patents to compute the parity code for hand-held or mechanical devices. So it has to be as simple as possible. Ruby Version Implementationthe basic principle of Luhn algorithm is very simple: (eg:49927398716)The first step: reverse the credit card number (61789372994)Step Two: Remove the number on the odd position after the reverse, add the sum until S1 (s1=6+7+9+7+9+4=42)Step three: Remove the number on

Puts "Please input Number1:" #提示输入第一个数number1 =gets# Save the first number puts "please input a operator (+,-, *,/):" Op=getsputs "in Put Number2: "Number2=getscase op.chomp# performs the corresponding operation according to the operator when" + "Result=number1.to_i+number2.to_iwhen"-"result= Number1.to_i-number2.to_iwhen "*" Result=number1.to_i*number2.to_iwhen "/" result=number1.to_i/number2.to_iend# Output calculation result puts "Result:#{number1.chomp}#{op.chomp}#{number2.chomp}=#{result}"

Open source, cross-platform (Windows, Linux, UNIX, etc.)scripting language (less efficient), no need to compile, run directlyGrammar Nature, IntroductionEverything is an object.Flexible language design (feel free to change the original design)Powerful nlocks and Cloures.Inheritance and MixinRuby Gems (plugins, libraries, etc.)Ruby Interpreter (interpreter): Mri,jruby,rubiniusInstallation under CentOSYum Install-y RubyVersion

Issue:Gem files would remain installed in/tmp/bundler20140825-31835-p0c0p/sqlite3-1.3.9/gems/sqlite3-1.3.9 for inspection.Results logged To/tmp/bundler20140825-31835-p0c0p/sqlite3-1.3.9/extensions/x86-linux/1.9.1/sqlite3-1.3.9/gem_ Make.outAn error occurred while installing Sqlite3 (1.3.9), and bundler cannot continue.Make sure that ' gem install sqlite3-v ' 1.3.9 ' succeeds before bundling.Solution:You need the SQLite3 development headers for the gem's native extension to compile against. You c