Crystal is a programming language that is compatible with coding and running in one.

Crystal’s programmer friendly syntax is largely taken from Ruby, so it is natural to read and easy to write, which increases the productivity of the development team. Adding compile-time static type checking provided an additional layer of security that proved invaluable in larger codebase, a problem faced by several long-running projects built on dynamic languages. Best of all, Crystal is extremely fast and has a very low memory footprint.

Crystal characteristics

• has syntax similar to Ruby (but compatibility is not the goal)
• Static type checking, but without specifying the types of variables or method parameters.
• Ability to call C code by writing bindings in Crystal.
• has compile-time evaluation and code generation to avoid boilerplate code.
• Compile to efficient native code.

Crystal installation

1. Install Crystal from source code

• • Install the latest Crystal version. To compile Crystal, you need Crystal.
  • Ensure that a supported version of LLVM exists in the path.
  • Ensure that all required libraries are installed.

< li data – track = “17” > clone the repository: git clone https://github.com/crystal-lang/crystal < / li >

• Run make to build your own version of the compiler.
• Run to ensure that all specifications pass and that you have installed everything correctly. make std_spec compiler_spec
• To run your crystal file. bin/crystal

2. On macOS

To easily install Crystal on macOS, you can use Homebrew.

brew update
brew install crystal

When a new Crystal version is released, you can upgrade your system using the following methods:

brew update
brew upgrade crystal

If you receive the following error:

ld:  library not found for -lssl (this usually means you  need to install the development package for  libssl)

You may need to install OpenSSL and link pkg-config to OpenSSL:

brew install openssl
export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/opt/openssl/lib/pkgconfig

3. On OpenBSD

Crystal is available as a compiled package. However, it may not be the latest version available. The package also includes shards.

doas pkg_add crystal

For building Crystal yourself, the required installation is available in the port tree.

If you have not installed the ports collection, you can find installation instructions in the OpenBSD Ports guide.

cd /usr/ports/lang/crystal
doas make clean install

To avoid building dependencies from source code (which can take a long time), you can install them from a binary package first:

doas pkg_add llvm libiconv boehm-gc  libevent2 pcre libyaml

Crystal mileage

1.The experimental development that began in Manas Lab in June 2011 far exceeded expectations: it was named the most promising programming language of 2018 by the CTO of BlockVue, and was predicted as promising by the likes of TechBeacon. With contributors from around the world, the Crystal community has built more than 3,500 public libraries and gathered more than 13,000 stargazers. Several companies have built parts of their technology stacks using Crystal, achieving huge performance improvements while maintaining maintainability.

2. In addition to the open community channels, where you can find most of the questions answered by other Crystal users, you can rely on our enterprise-grade support and consulting services if you implement your project at Crystal.

3.Crystal’s programmer friendly syntax is largely taken from Ruby, so it is natural to read and easy to write, which increases the productivity of the development team. Adding compile-time static type checking provided an additional layer of security that proved invaluable in larger codebase, a problem faced by several long-running projects built on dynamic languages. Best of all, Crystal is extremely fast and has a very low memory footprint.

Ruby is known for its beautiful syntax, which allows developers to write code at incredible speeds and is perfect for jump-starting most projects. Crystal syntax comes directly from Ruby and inherits all of these features.

require "html_builder"

html = HTML.build do
link(href: "http://crystal-lang.org") do
text "Crystal is awesome"
end
end

Several major dynamic languages are currently adding type checking features to help developers handle large code bases – Crystal has type checking built from scratch, so it prevents even the dreaded null pointer exception, and has the added benefit of global type inference to reduce verboseness.

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Open source protocol: Apache-2.0 License