GoLand 2018.3 Beta: Change Signature refactoring, debugging Google App Engine, Testify, Go core dumps, and more
The upcoming GoLand 2018.3 release has reached the Beta milestone!
If you’re new to our release cycles, we announce a Beta when we’ve packed everything we plan to deliver in the major update. Since this moment and until the release date, our team is focused only on polishing everything off.
Compared with our Early Access builds, the Beta version is quite stable though it may still have bugs and other issues.
Let’s have a look at what the upcoming release will have inside!
Click on a topic below to learn more about a specific area you’re interested in, or read through the whole blog post to get yourself up to speed with all the new improvements:
- New Change Signature refactoring and updates for Inline and Rename
- Code inspections
- Intention actions
- Code Completion
- Code Editor
- Search & Navigation
- Debugger updates
- Diagram support
- Test Runner updates
- VCS improvements
- Accessibility improvements
New Change Signature refactoring and updates for Inline and Rename
The new Change Signature refactoring gives you many ways to modify a function, method, or method specification signature in just a few clicks! You can easily change their names and add, remove, reorder, and rename parameters. When you refactor a method specification, GoLand even asks you if you want implementations to be updated as well.
The Refactoring Preview pane help make sure that every change in your code is safe. It lets you explore the results before they’re applied, and discard the change if anything goes wrong.
To learn more, read the detailed blog post about Change Signature and how it helps make safe and fast changes across your whole code base.
In addition, GoLand now highlights inlined code after applying the Inline refactoring to help you catch what has actually happened.
The Rename refactoring gives you an insight into the potential conflicts that might be introduced by the renaming, if any. Conflicts are displayed in the Problems Detected window, where you can continue to explore them in the Conflicts tab, cancel, or proceed with the refactoring.
The Unhandled Error code inspection alerts you about functions or methods that return an error whenever the error isn’t being checked.
Unreachable code inspection detects parts of code that can never be executed.
The Function Call code inspection, which warns you if an expression should be converted into a function or a method call, now works in tandem with the Finish Call Expression quick-fix. This quick-fix adds the missing brackets and completes the expression.
The Add format string argument intention action generates a placeholder for any provided expression via a popup. It inserts the placeholder into a format string and passes the expression as an argument for the placeholder. Also, you can enable code folding for format strings that will replace placeholders with the corresponding arguments.
The Generate Constructor intention action generates functions for creating values of the struct type.
The intention actions Generate getter/setter and Generate getter and setter now create boilerplate code and let you customize the pointer/non-pointer receiver type and its name.
These actions are also available via the Generate popup menu.
GoLand 2018.3 adds method-like completion for functions. When you have value
t of type
T and write
t.Foo, you can look through functions that accept value of type
T as the first argument. Invoke basic completion twice (Ctrl+Space+Space) to see all of the available completion options.
As we continuously improve GoLand’s code editor, its capabilities grow and expand in different ways with each update. This release is no exception.
Go templates (html/template) now resolve variables and field chains. You can also take advantage of code completion and the Rename refactoring as you work with them.
New gutter icons let you better spot shadowed/shadowing methods of embedded types. You can also navigate back and forth in one click, or by pressing ⌘U on macOS or Ctrl+U on Windows/Linux.
Complete Current Statement now inserts the required trailing comma automatically in any composite literals (such as struct, slice, etc.) and puts a caret on the position of the next statement. Just press ⌘⇧↩ on Mac or Ctrl + Shift + Enter on Windows/Linux or select Edit | Complete Current Statement from the main menu.
In GoLand 2018.3 Beta and further versions, you can exclude a specific set of files from the code actions Reformat code, Optimize imports, and Rearrange.
Search & navigation
Improved Search Everywhere popup
The Search Everywhere popup (Double Shift) gets a new UI and works faster thanks to an asynchronous approach. It also provides quick access to Go to type, Go to file, Go to symbol, and Find. Use the TAB key to switch between them.
Multiline code snippets in Find in Path and Replace in Path dialogs
The Find and Replace in Path dialogs are better at supporting multiline code snippets.
The upcoming 2018.3 release improves the GoLand debugger in many different ways.
Debugging Google App Engine apps
GoLand now lets you easily run and debug Google App Engine applications locally. To expand our support, we’ve also added a new App Engine project template. Read this blog post to learn more.
Debugger gets coding assistance
The debugger provides code completion, inspections, and quick-fixes for the Evaluate Expression dialog and the Watchers panel.
Go core dumps
GoLand makes exploring core dumps easier without any third-party tools, because all you need to do is to select Run | Open Core Dump. Also, adjust Run configuration settings to create crash dumps automatically: just put
GOTRACEBACK=crash to the Environment field.
Note that core dumps are available only on Linux machines by default. However, you can analyze memory dumps on any flavor of macOS, Windows, or Linux.
Mozilla rr support
We’ve added support for Mozilla rr in the debugger on Linux. The main idea of Mozilla
rr is help you catch non-trivial bugs more easily. To learn more about how Mozilla
rr works and how GoLand can help you use its features, read this blog post.
We support diagrams! Visualize and explore:
- Go module dependencies (available only in the context menu of a
- Tables and their relationships in Databases and SQL.
For more details, read this blog post.
Test Runner updates
Testify test framework
The upcoming GoLand 2018.3 supports Testify. It allows you to run suites and methods as regular test functions, directly from the editor. The Comparison Failure window helps explore diffs between expected and actual values for failed assertions.
Generate any test via the Generate popup menu
Empty test file, Test for function, Tests for file, and Tests for package are now available via the Generate popup menu.
GitHub Pull Requests
The new Pull Requests tool window shows all pull requests from GitHub with their descriptions, current labels, changed files, and assignees. There, you can search by state, assignee, author, after, before, or use sorting. The IDE also helps you create a new local branch or open a pull request on GitHub.
Git submodules support
GoLand now supports Git submodules: when you clone repositories with the submodules, GoLand will not only clone the root repositories but also all of its submodules.
The Kubernetes plugin supports Helm
As you work with Helm resource template files, enjoy code completion, the Rename refactoring, code inspections, and quick-fixes. For more details, please read this blog post.
Docker supports CLI options for the build part in Docker run configurations.
We strive to make our IDEs accessible to everyone, and this update takes a big step in that direction.
We’ve added new a High-contrast theme, which can be accessed using the drop-down list from the theme options under Settings | Appearance & Behavior or just press Ctrl+`.
Better support for screen readers
The IDE now allows line numbers, VCS annotations, breakpoints, and other gutter icons to be read by a screen reader.
Attach action is available via the Open Project popup
The Open Project popup now lets you attach a directory to already opened projects, so you can have as many opened projects in one GoLand instance as you want. Click File | Open, and choose the project you want to attach.
Drag-and-drop files and projects on the Welcome screen to open
The Activity Monitor shows how much CPU the various subsystems and plugins are consuming: Help | Activity Monitor.
The Plugins page based in Settings | Plugins has been completely reworked, including all the functionality and UI. It helps much easier find necessary plugin searching by tags and sort the results by downloads, name, rating, featured, or updated.
That’s all! Download the Beta version from the website, via Toolbox App, or right from the IDE. Also, don’t hesitate to share your feedback with us: here in comments, in our Twitter, or our bug tracker.