How I came to Crystal Hello guys. I was looking for a new programming language with which to start my freelance computer programmer work. Looking around I found and I love the readable syntax, similar to Ruby. Reading the documentation you read the objectives that led to the creation of this language: Crystal Crystal is a programming language with the following goals: Have a syntax similar to Ruby (but compatibility with it is not a goal). Be statically type-checked, but without having to specify the type of variables or method arguments. Be able to call C code by writing bindings to it in Crystal. Have compile-time evaluation and generation of code, to avoid boilerplate code. Compile to efficient native code. OK. Looks good! I searched among the to see if there were sufficient materials that should make it immediately usable (I have to report lack of standard documentation, but actually the language is in alpha stage). For me it was enough to continue. resources How I came to Kemal I think is the standard the facto web framework for Crystal. is a kind and helpful person and I love all the community on Gitter (both Crystal and Kemal have a channel). Kemal Serdar Dogruyol Installation Actually Crystal don’t work on Windows. So you have to use a Mac or a Linux based system. OS X brew update brew install crystal-lang --with-llvm Debian / Ubuntu curl https://dist.crystal-lang.org/apt/setup.sh | sudo bash sudo apt-get install crystal For other distros check the . official documentation The Workflow Crystal is a compiled language, so it’s helpful to have a tool like that build your crystal application, watches files, and rebuilds app on file changes. Sentry I chose as IDE, with a couple of packages: and . Atom Crystal-tools Crystal The Project I want to create a simple dynamic website, with Bootstrap layout and dynamic content, something of everyday use for a freelancer. Create the project Integration of sentry Integration of layouts Authorization for backend Dynamic Content (pages, news….) OK. Lets start! A note: In the following code $ is the command prompt and the square brackets indicate a text chosen by you to replace the present one. You should create your application first. Go to the desired location then: $ crystal init app [APP_NAME] $ cd [APP_NAME] Install Sentry in your project: $ curl -fsSLo- https://raw.githubusercontent.com/samueleaton/sentry/master/install.rb | ruby open the project in your choosed editor, go to .gitignore and modify as follow: /.shards/ /doc/ /lib/ /bin/ /dev/ sentry [APP_NAME] (here we remove sentry and the executables from source control) then add to the shard.yml file as a dependency. kemal dependencies: kemal: github: kemalcr/kemal branch: master and then $ shards update and substitute [APP_NAME].cr with the following: require "kemal" get "/" do "Hello World!" end Kemal.run then start sentry: $ ./sentry you see something like: 🤖 Your SentryBot is vigilant. beep-boop… 🤖 watching file: ./src/prova/version.cr 🤖 watching file: ./src/prova.cr 🤖 compiling prova… 🤖 starting prova… [development] Kemal is ready to lead at http://0.0.0.0:3000 go to the browser and check that everything is ok. Enough for today. Next time we work to make this skeleton app a working app. See ya
