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Intellij IDEA Intro, Tips and Tricks
Intellij IDEA is a Java IDE that supports Scala. It has two editions and uses a project/module structure to organize code. Key features include code completion, navigation, refactoring, version control integration with Git/GitHub, and support for build tools like SBT. The document provides tips on setting preferences and keymaps, importing and working with SBT projects, debugging, and improving performance for large codebases.
Intellij IDEA Intro, Tips and Tricks
- 1. Intellij IDEA Intro, Tipsand Tricks vitojeng vito@is-land.com.tw 2017.11.21
- 2. Intro ● IntelliJ IDEAis a Java integrated development environment (IDE) for developing computer software. (wikipedia) ● Two editions ○ Ultimate Edition ○ Community Edition - opensourced in github ○ Comparison matrix ● We use community edition in this talk.
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- 4. User Interface ● DefaultIDE Layout ○ Menu & Toolbar ○ Navigation bar ○ Status bar ○ Editor ○ Tool Windows ● Keymap ● Help
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- 6. ● Project(What isproject?) ○ Configuration format ■ Directory-based(.idea/, *.xml) ■ File-based(.ipr, *.iws) ● Module(What is a module?) ○ .iml ● Version control(if you want) ○ .xml , .ipr, .iml ○ Exclude: ■ workspace.xml ■ *.iws Project & Module concept Intellij Window 1 Window 2 Project A Project B Module A1 Module A2 Module B1 Module B2
- 7. Choose a SuitableKeymap is Important Mac OS X 10.5+ : If you are using IntelliJ IDEA only on Mac OS, we recommend choosing the schema named “Mac OS X 10.5+”. Mac OS X : The default “Mac OS X” schema is recommended if you use IntelliJ IDEA on other platforms too as the bindings are more alike to the default Windows/Linux schema. I use Mac OS X keymap in multi-platforms.
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- 9. New Project inIntellij IDEA(without SBT) ● Just Play Scala ! ● New Project Wizard ○ File | New | Project... ■ Java - Add Scala Libraries ■ Scala - IDEA-based Scala project
- 10. New / ImportProject in Intellij IDEA(with SBT) ● Many Scala project use SBT. ● New Project Wizard ○ File | New | Project... ■ SBT-based Scala project ● Import Project Wizard ○ File | New | Project from Existing Sources... ■ choose a folder(existing SBT project) ● Import project from external model (SBT/Gradle/Maven)
- 11. Working with SBT ●Tool Windows ○ Project ○ SBT ○ SBT Shell ● Attach debugger to SBT Shell
- 12. Working with ScalaWorksheet ● REPL mode in Intellij IDEA ● How about Ammonite support ? ○ Look like there will be something in 2017.3(public preview) ○ Stay tuned ! (github, youtrack)
- 13. Desugar Scala ● Code| Desugar Scala code ... ● Show Diff
- 14. Work with Git/ Github ● Import Git / Github project ○ Command line ■ $ git clone ■ File | New | Project from Existing Sources... ■ Import SBT project ○ User interface ■ File | New | Project from Version Control | Github ■ SBT project detected: Import SBT project
- 15. Work with Git/ Github ● Mutiple Version Control in the same Project ○ Mutiple git repo ○ Mix with different version control
- 16. Work with Git/ Github ● Switch Branch ● Local Changes ● Log ● Show History ● Show Diff
- 17. ● Keyboard ShortcutsYou Cannot Miss ● Example ● Help | Keymap Reference Keymap & Keyboard Shortcuts
- 18. Menu - Edit| Find / Replace ● Find... / Replace... ● Find in Path... / Replace in Path... ● Find Usages ● Search Structurally...
- 19. Menu - View ●Quick Definition ● Quick Documentation ● Recent Files ● Compare With...
- 20. Menu - Navigate ●Class... ● File... ● Symbol... ● Select In... ● File Structure
- 21. Menu - Code ●Generate... ● Surround With... ● Unwrap/Remove... ● Desugar Scala code...
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- 23. Menu - Build/ Run / Tools
- 24. Look into LargeProject ● Add Scope ○ Preferences | Appearance & Behavior | Scopes ● Edit | Find | Find in Path... ○ Use Scope ○ Filter ● Edit | Find | Search Structurally... ● Navigate | Type Hierarchy ● Navigate | Method Hierarchy ● Navigate | Call Hierarchy
- 25. Look into LargeProject ● Menu: Analyze ○ Analyze Dependencies ... ○ Analyze Backward Dependencies ... ○
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- 27. Performance ● Intellij IDEA'scache is sometimes not quite right enough to cause performance issue. ○ Rebuild cache ■ File | Invalidate Caches / Restart ● Too many Scala classes may cause very slow editor response ○ Turn off some inspections of Scala ■ Preferences | Editor | Inspections | Scala Category
- 28. Join ScalaTaiwan GitterRoom! https://gitter.im/ScalaTaiwan/ScalaTaiwan
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