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LICENSE (1082, 2021-09-26)
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bin/ (0, 2021-09-26)
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demo/ (0, 2021-09-26)
demo/demo.gif (93370, 2021-09-26)
shard.lock (167, 2021-09-26)
shard.yml (244, 2021-09-26)
spec/ (0, 2021-09-26)
spec/icr_spec.cr (90, 2021-09-26)
spec/integration/ (0, 2021-09-26)
spec/integration/icr_spec.cr (9950, 2021-09-26)
spec/spec_helper.cr (843, 2021-09-26)
src/ (0, 2021-09-26)
src/Makefile (368, 2021-09-26)
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src/icr.cr (668, 2021-09-26)
src/icr/ (0, 2021-09-26)
src/icr/cli.cr (4047, 2021-09-26)
src/icr/command.cr (287, 2021-09-26)
src/icr/command_stack.cr (1944, 2021-09-26)
src/icr/console.cr (6660, 2021-09-26)
src/icr/executer.cr (2670, 2021-09-26)
src/icr/execution_result.cr (305, 2021-09-26)
src/icr/highlighter.cr (5731, 2021-09-26)
src/icr/syntax_check_result.cr (158, 2021-09-26)

# ICR - Interactive Crystal [](https://travis-ci.org/crystal-community/icr) Interactive console for [Crystal Programming Language](http://crystal-lang.org/). * [Usage](#usage) * [Require local files](#require-local-files) * [Installation](#installation) * [Arch Linux](#arch-linux) * [How does it work?](#how-does-it-work) * [Commands and special locals](#commands-and-special-locals) * [Update check](#update-check) * [Development](#development) * [Editor Integration](#editor-integration) * [Contributors](#contributors) ## Usage It's like irb, but for Crystal:  ### Require local files You can require local files by relative path (starts with `./`): ``` require "./src/my_cool_lib" ``` Libs can also be required from the cli: ``` $ icr -r colorize -r ./src/my_cool_lib ``` ## Installation Prerequisites: * The latest version of crystal. * Readline (for Debian/Ubuntu install `libreadline6-dev` package). * LLVM development files. Clone the repo: ``` git clone https://github.com/crystal-community/icr.git ``` Switch to repo-directory: ``` cd icr ``` Build: ``` make ``` Install: ``` sudo make install ``` ### As a shard dependency If you would like to include icr as a dependency, you can add it to your `shard.yml` ```yml dependencies: icr: github: crystal-community/icr branch: master ``` Then just run `shards install` from your project! Enjoy! ### Arch Linux Arch Linux users can install ICR [from AUR](https://aur.archlinux.org/packages/crystal-icr/). ## How does it work? * Every time you press `Enter` it adds a new instruction, generates a new crystal program, and executes it. * The output is split into 2 parts: regular program output (e.g. output from `puts 10`) and the value returned by the last command. * The regular output is saved, and when you type a new instruction, a new program is generated. The saved output is subtracted from the new output, and the difference is printed out. It creates an illusion that only new instructions are executed :) ## Commands and special locals * `paste` - enables paste mode * `debug` - toggles debug mode off and on. In debug mode icr will print the code before executing it * `quit` or `exit` - exits current interactive console * `reset` - clears out all of the accumulated commands * `__` - holds the result of the last expression. Example: ```crystal icr > "5" + "2" => "52" icr > __.to_i - 10 => 42 ``` ## Update check ICR periodically checks for the new releases on Github. If your current version is out of date, it will simply show you a notice at start. You can disable this behavior using `--disable-update-check` CLI flag. ## Development To run tests: ``` make test ``` ## Editor integration - [inf-crystal.el](https://github.com/brantou/inf-crystal.el) - Connects REPL buffer to the ICR subprocess in Emacs ## Contributors - [greyblake](https://github.com/greyblake) Potapov Sergey - creator, maintainer - [BlaXpirit](https://github.com/BlaXpirit) Oleh Prypin - fixes for Crystal 0.16 - [puppetpies](https://github.com/puppetpies) Brian Hood - support of records - [jwoertink](https://github.com/jwoertink) Jeremy Woertink - support of -r option and number of other contributions - [veelenga](https://github.com/veelenga) V. Elenhaupt - maintenance - [MakeNowJust](https://github.com/MakeNowJust) TSUYUSATO Kitsune - syntax highlight support

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