Resources

• API Documents (latest)
• Crystal Book (latest)
• Awesome Crystal (collection of shards)
• CrystalShards

Extension of vscode

• https://marketplace.visualstudio.com/items?itemName=crystal-lang-tools.crystal-lang
  • https://github.com/elbywan/crystalline (Language Server)
• https://marketplace.visualstudio.com/items?itemName=veelenga.crystal-ameba

Shards

• Amber
  • A full-featured web framework
  • Like Rails
• Lucky
  • A full-featured web framework
  • Like Rails
• Kemal
  • Simple Web Framework
  • Like Sinatra
• Ameba
  • Code style linter
  • Like Ruby’s Rubocop
• Crest
  • HTTP Client
  • Like Ruby’s RestClient

Snipppets

Build project

# using crystal
crystal build --no-debug --release

# using shards
shards build --no-debug --release

Release build

shards build --release --no-debug --production

#    --frozen                         Strictly installs locked versions from shard.lock.
#    --without-development            Does not install development dependencies.
#    --production                     same as `--frozen --without-development`

Unit test

# Basic
crystal spec

# Verbose
crsytal spec -v

Format

Linting with ameba

# Installation
# brew tap crystal-ameba/ameba
# brew install ameba

ameba

# Auto fix
ameba --fix