crystal v0.32.0

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crystal v0.32.0 Release Notes

• Language changes

  • 👍 Allow boolean negation to be written also as a regular method call expr.!. (#8445, thanks @jan-zajic)

  Macros

  • ➕ Add TypeNode#class_vars to list class variables of a type in a macro. (#8405, thanks @jan-zajic)
  • ➕ Add TypeNode#includers to get an array of types a module is directly included in. (#8133, thanks @Blacksmoke16)
  • Add ArrayLiteral#map_with_index and TupleLiteral#map_with_index. (#8049, thanks @Blacksmoke16)
  • ➕ Add docs for ArrayLiteral#reduce. (#8379, thanks @jan-zajic)
  • ➕ Add lower: named argument to StringLiteral#camelcase. (#8429, thanks @Blacksmoke16)

  Standard library

  • (breaking-change) Remove Readline from std-lib. It's now available as a shard at crystal-lang/crystal-readline (#8364, thanks @ftarulla)
  • 🚚 Move Number#clamp to Comparable#clamp. (#8522, thanks @wontruefree)
  • 👍 Allow abort without arguments. (#8214, thanks @dbackeus)
  • 👌 Improve error message for not-nil assertion in getters. (#8200, #8296, thanks @icy-arctic-fox)
  • ➕ Add Enum.valid?. (#5716, thanks @MakeNowJust)
  • Disable colored output if TERM=dumb. (#8271, thanks @ilanpillemer)
  • 📚 Documentation improvements. (#7656, #8337, #8446, thanks @r00ster91, @vlazar, @cserb)
  • ➕ Add docs for pseudo methods. (#8327, #8491, thanks @straight-shoota)
  • Code cleanups. (#8270, #8368, #8404, thanks @asterite, @vlazar, @arcage)

  Numeric

  • 🛠 Fixed % and Int#remainder edge case of min int value against -1. (#8321, thanks @asterite)
  • 🛠 Fixed Int#gcd types edge case and improve performance. (#7996, #8419, thanks @yxhuvud, @j8r)
  • ➕ Add Int#bits for accessing bit ranges. (#8165, thanks @stakach)
  • 👍 Allow Number#round with UInt argument. (#8361, thanks @igor-alexandrov)

  Text

  • (breaking-change) Implement string interpolation as a call to String.interpolation. (#8400, thanks @asterite)
  • (breaking-change) Deprecate String#codepoint_at, use char_at(index).ord. (#8475, thanks @vlazar)
  • 🛠 Fixed encoding specs for musl iconv. (#8525, thanks @straight-shoota)
  • ➕ Add String#presence. (#8345, #8508, thanks @igor-alexandrov, @Sija)
  • ➕ Add String#center. (#8557, thanks @hutou)
  • 🐎 (performance) Refactor String#to_utf16 optimizing for ascii-only. (#8526, thanks @straight-shoota)
  • ➕ Add docs in Levenshtein module. (#8386, thanks @katafrakt)
  • ➕ Add docs to Regex::Options. (#8448, thanks @jan-zajic)

  Collections

  • (breaking-change) Deprecate Enumerable#grep, use Enumerable#select. (#8452, thanks @j8r)
  • 🛠 Fixed Enumerable#minmax, #min, #max for partially comparable values. (#8490, thanks @TedTran2019)
  • 🛠 Fixed Hash#rehash. (#8450, thanks @asterite)
  • 🛠 Fixed Array range assignment index out of bounds. (#8347, thanks @asterite)
  • 🛠 Fixed endless ranged support for String#[]? and Array#[]?. (#8567, thanks @KarthikMAM)
  • Add Hash#compare_by_identity and Set#compare_by_identity. (#8451, thanks @asterite)
  • Add Enumerable#each_cons_pair and Iterator#cons_pair yielding a tuple. (#8332, thanks @straight-shoota)
  • Add offset argument to all map_with_index methods. (#8264, thanks @asterite)
  • 🐎 (performance) Optimized version of Tuple#to_a. (#8265, thanks @asterite)
  • ➕ Add docs to Hash.merge!(other : Hash, &). (#8380, thanks @jan-zajic)
  • ➕ Add docs to Hash.select. (#8391, thanks @jan-zajic)
  • ➕ Add docs and specs to Enumerable.reduce. (#8378, thanks @jan-zajic)

  Serialization

  • (breaking-change) Make XML::Reader#expand raise, introduce XML::Reader#expand? for former behavior. (#8186, thanks @Blacksmoke16)
  • 👍 Allow JSON.mapping & YAML.mapping converter attribute to be applied to Array and Hash. (#8156, thanks @rodrigopinto)
  • Add use_json_discriminator and use_yaml_discriminator to choose type based on property value. (#8406, thanks @asterite)
  • Remove return type self restriction from Object.from_json and Object.from_yaml. (#8489, thanks @straight-shoota)

  Files

  • (breaking-change) Remove expand home (~) by default in File.expand_path and Path#expand, now opt-in argument. (#7903, thanks @didactic-drunk)
  • Fixed bugs in Path regarding #dirname, #each_part, #each_parent. (#8415, thanks @jan-zajic)
  • 🛠 Fixed GZip::Reader and GZip::Writer to handle large data sizes. (#8421, thanks @straight-shoota)
  • 🛠 Fixed File::Info#same_file? by providing access to 64 bit inode numbers. (#8355, thanks @didactic-drunk)

  Networking

  • 🛠 Fixed HTTP::Response#mime_type returns nil on empty Content-Type header. (#8464, thanks @Sija)
  • 🛠 Fixed handling of unidirectional SSL servers hang. (#8481, thanks @rdp)
  • ➕ Add HTTP::Client#write_timeout. (#8507, thanks @Sija)
  • ⚡️ Updated mime type of .js files to text/javascript and include image/webp. (#8342, thanks @mamantoha)
  • 🔨 Refactor websocket protocol GUID string. (#8339, thanks @vlazar)

  Crypto

  • (breaking-change) Enforce single-line results of OpenSSL::DigestBase#base64digest via Base64.strict_encode. (#8215, thanks @j8r)

  Concurrency

  • 🛠 Fixed Channel successful sent and raise behavior. (#8284, thanks @firejox)
  • 🛠 Fixed Channel#close to be thread-safe. (#8249, thanks @firejox)
  • 🛠 Fixed select with receive? and closed channels. (#8304, thanks @bcardiff)
  • Faster Mutex implementation and policy checks. (#8295, #8563, thanks @waj, @ysbaddaden)
  • 🐎 (performance) Channel internals refactor and optimize. (#8322, #8497, thanks @firejox, @Sija)
  • ➕ Add docs to Channel#send and Channel#close. (#8356, thanks @lbarasti)
  • Fixed Thread#gc_thread_handler for Windows support. (#8519, thanks @straight-shoota)

  System

  • 🚦 Don't close pipes used for signal handlers in multi-thread mode. (#8465, thanks @waj)
  • 🛠 Fixed thread initialization on OpenBSD. (#8293, thanks @wmoxam)
  • Implement fibers for win32. (#7995, #8513, thanks @straight-shoota, @firejox)

  ⚙ Runtime

  • Fixed fiber initialization on -Dgc_none -Dpreview_mt. (#8280, thanks @bcardiff)
  • ➕ Add GC profiling stats and warning bindings. (#8281, thanks @bcardiff, @benoist)
  • 🔨 Refactor callstack_spec. (#8308, #8395, thanks @straight-shoota, @Sija)

  Spec

  • 🛠 Fixed --fail-fast behaviour. (#8453, thanks @asterite)
  • ➕ Add before, after, and around hooks. (#8302, thanks @asterite)
  • Restrict the type returned by should_not be_nil and others. (#8412, thanks @asterite)
  • ➕ Add ability to randomize specs via --order random|<seed-value>. (#8310, thanks @Fryguy)
  • ➕ Add specs for Spec filters. (#8242, thanks @Fryguy)
  • ➕ Add ability to tag specs. (#8068, thanks @Fryguy)

  Compiler

  • 🛠 Fixed musl libc detection (Alpine 3.10 regression bug). (#8330, thanks @straight-shoota)
  • 🛠 Fixed pragmas handling in macros. (#8256, thanks @asterite)
  • 🛠 Fixed parser crash for 'alias Foo?'. (#8282, thanks @oprypin)
  • 🛠 Fixed parser error on newline before closing parenthesis. (#8320, thanks @MakeNowJust)
  • 🛠 Fixed generic subtypes edge cases triggering no target defs error. (#8417, thanks @asterite)
  • 🛠 Fixed cleanup of local vars reachable by macros. (#8529, thanks @asterite)
  • ➕ Add support for LLVM 9. (#8358, thanks @RX14)
  • ➕ Add --mcmodel option to compiler. (#8363, thanks @ffwff)
  • Disallow instance_sizeof on union. (#8399, thanks @asterite)
  • ➕ Add mention to crystal <command> --help in help. (#3628, thanks @rdp)
  • 👌 Improve error message when a filename is misspelled. (#8500, thanks @rdp)
  • 👉 Show full path of locally compiled Crystal. (#8486, thanks @rdp)
  • Code cleanups. (#8460, thanks @veelenga)

  Language semantics

  • 🛠 Fixed method lookup priority when type alias of union is used. (#8258, thanks @asterite)
  • 🛠 Fixed visibility modifiers in virtual types. (#8562, thanks @asterite)
  • 🛠 Fixed sizeof(Bool). (#8273, thanks @asterite)

  Tools

  Formatter

  • 🛠 Fixed indent in arguments. (#8315, thanks @MakeNowJust)
  • 🛠 Fixed crash related to parenthesis on generic types. (#8501, thanks @asterite)

  Doc generator

  • 🛠 Fixed underscore type restriction in doc generator. (#8331, thanks @straight-shoota)
  • 📄 Correctly attach docs through multiple macro invocations. (#8502, thanks @asterite)
  • 👍 Allow constants to use :ditto:. (#8389, thanks @Blacksmoke16)
  • ➕ Add sitemap generator. (#8348, thanks @straight-shoota)
  • ➕ Add documentation for pseudo-methods: !, as, nil?, etc.. (#8327, #8371, thanks @straight-shoota)
  • ➕ Add clickable anchor icon next to headings. (#8344, thanks @Blacksmoke16)
  • 👉 Use & instead of &block for signature of yielding method. (#8394, thanks @j8r)

  Playground

  • Do not collapse whitespaces in playground sidebar. (#8528, thanks @hugopl)

  Others

  • CI improvements and housekeeping. (#8210, #8251, #8283, #8439, #8510, thanks @bcardiff)
  • ⚡️ Update base docker images to bionic and LLVM 8.0. (#8442, thanks @bcardiff)
  • Repository clean-up. (#8312, #8397, thanks @bcardiff, @straight-shoota)

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