Crystal 1.10.0 is released!
We are delivering a new Crystal release with several bugfixes and improvements. Pre-built packages are available on GitHub Releases and our official distribution channels. See crystal-lang.org/install for installation instructions. Stats This release includes 82 changes since 1.9.2 by 21 contributors. We thank all the contributors for all the effort put into improving the language! ❤️ Changes Belo
Crystal 1.8.0 is released!
From 1.8 onwards the Crystal compiler should be built with PCRE2 to ensure consistency. ⚠️ As a measure to ease migration to PCRE2, Regex::Options gained more named members which work in both engine versions. To accommodate the additional values, the enum base type changes from Int32 to UInt64 (#13223). ⚠️ Additionally, a new enum Regex::MatchOptions was added to hold options specific to match ope
LLVM opaque pointer support has landed
Crystal 1.8, the upcoming minor release, will support LLVM’s opaque pointers for the first time, allowing the compiler to be built with LLVM 15 or above. Additionally, this update brings a significant improvement to compilation times. Pointers in LLVM To understand the significance of opaque pointers, let’s take a look at a small sample program: # test.cr class Foo def initialize(@x : Int32) end e
Crystal 1.7.3 is released!
We are releasing the third patch release of the 1.7 series. Pre-built packages are available on GitHub Releases and our official distribution channels. See crystal-lang.org/install for installation instructions. This patch includes a bugfix for a regression introduced in 1.7.0 and several bugfixes and a performance regression fix for supporting the PCRE2 regex library. The regression affected the
Heads up: Crystal is upgrading its Regex engine
Crystal uses since its inception the PCRE library for dealing with regular expressions. This library has two major versions, and Crystal so far resorted to the first one (PCRE). However, this version reached its end of life. Therefore, for the next release (1.8) we are planning to move to its successor, PCRE2. PCRE vs PCRE2 The two library versions, PCRE and PCRE2 are mostly compatible with each o
Crystal 1.6.0 is released!
We are delivering a new release with several bugfixes and improvements. Below we list the most important or interesting changes, without mentioning several bugfixes and smaller enhancements. For more details, visit the changelog. Breaking changes are marked with ⚠️. Pre-built packages are available on GitHub Releases and our official distribution channels. See crystal-lang.org/install for installa
Crystal 1.5.0 is released!
We are delivering a new release with several bugfixes and improvements. Below we list the most important or interesting changes, without mentioning several bugfixes and smaller enhancements. For more details, visit the changelog. Breaking changes are marked with ⚠️. Pre-built packages are available on GitHub Releases and our official distribution channels. See crystal-lang.org/install for installa
Crystal 1.4.0 is released!
Celebrating the first year of the 1.X series of our beloved language, we are delivering a new release with several bugfixes and improvements. Below we list the most important or interesting changes, without mentioning the several bugfixes and smaller enhancements. For more details, visit the changelog. Those excited by the new interpreter might be happy to find the ongoing efforts to improve it. P
Crystal 1.3.0 is released!
We are delivering a new release with several bugfixes and improvements. Below we list the most important or interesting changes, without mentioning several bugfixes and smaller enhancements. For more details, visit the changelog. Breaking changes are marked with ⚠️. Pre-built packages are available on GitHub Releases and our official distribution channels. See crystal-lang.org/install for installa
Crystal 1.2.0 is released!
We are delivering a new release with several bugfixes and improvements. Below we list the most important or interesting changes, without mentioning the several bugfixes. For details visit the release’s notes. Breaking changes are marked with ⚠️. Stats In this release we included 181 PRs since the 1.1.1 release by 32 contributors. We thank all the effort put into improving the language and its stdl
Crystal 1.1.0 is released!
We are releasing the first post-1.0 release, making efforts to keep our promise of making regular releases each 3 months, a bit delayed because of the conference, and with special focus on keeping the language stability. Below we list the most important or interesting changes, without mentioning the several bugfixes. For details visit the release’s notes. Stats In this release we included 166 PRs
Crystal 1.0 - What to expect
Ary Borenzweig Brian J. Cardiff Juan Wajnerman +450 more The release of the first major release of Crystal arrives after many years of hard work. With thousands of contributions from people worldwide, it was finally possible to find consensus for what truly mattered for 1.0 and what could wait for future releases. Getting here wasn’t an easy journey, filled with enriching, controversial, delightfu
Towards Crystal 1.0
Currently the main goal of the Crystal core team is to reach 1.0 in the near future. Since achieving that goal involves a number of non-obvious tradeoffs, we want to use this post to shed some light on those inherent tensions and how they drive our work and priorities for the next few releases. There are three main aspects of the Crystal ecosystem that in a way compete for resources and design dec
Crystal : The Crystal Programming Language
Batteries includedCrystal’s standard library comes with a whole range of libraries that let you start working on your project right away. Check the API docs # A very basic HTTP server require "http/server" server = HTTP::Server.new do |context| context.response.content_type = "text/plain" context.response.print "Hello world, got #{context.request.path}!" end address = server.bind_tcp(8080) puts "L
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