Go - JetBrains Guide

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Highlights of GoLand 2023.3

Explore key features and enhancements in GoLand 2023.3.

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Code coverage for applications

Track code execution and identify dead code effectively

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Improve Code Readability and Navigation

Discover how to manage code visibility with code folding in Go

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Create a function in another package

Type a non-existing function name and generate its implementation in a package of your choice

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Introduce parameters from unresolved references in your code

Change a function or method signature by introducing parameters directly from unresolved references

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Empower your `Printf`-like functions with coding assistance

Provide hints and highlights for message formats in custom `Printf`-like functions

tutorial

Authentication for Go Applications: The Secure Way

This article compares the pros and cons of five different authentication methods: Basic HTTP, bearer token, JWT, OIDC, and SAML.

Part of tutorial

Authentication for Go Applications: The Secure Way

This article compares the pros and cons of five different authentication methods: Basic HTTP, bearer token, JWT, OIDC, and SAML.

Part of tutorial

Go REST Guide. Gin Framework

The third part of this series looks at how to build a REST API using a web framework called Gin.

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Go REST Guide. gorilla/mux Router

The second part of this series demonstrates how to use a router for improved handling of requests when building REST APIs.

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Go REST Guide

This is a three-part series dedicated to three different methods of building a Go REST API.

Part of tutorial

Go REST Guide. The Standard Library

The first part of this series focuses on using the standard library, a simple and native way to create HTTP servers.

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New Features in GoLand 2023.1

A selection of useful features from GoLand 2022.3.

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Vulnerability checker

Analyze your codebase and highlight known vulnerabilities in go.mod

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Convert between different types of strings

Convert strings that are surrounded by backticks to double-quoted ones and vice-versa

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Intention action to convert integers to strings

Convert an integer to a string by using the `strconv.Itoa()` call

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Create inspections with regular expressions

Use regular expressions to create your own search and replace inspections

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Implement an interface

Implement unexported interfaces by pressing Ctrl + I

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Rename generic receivers along with a generic struct

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New Features in GoLand 2022.3

A selection of useful features from GoLand 2022.3.

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Code vision

Focus on your code while getting additional information about it.

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Generate tests for generic functions

Use a shortcut to generate test files for your generic functions.

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Generate 'go.work' for a project

Generate 'go.work' by using the context menu or a quick-fix with 'replace' directives

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Integrated Go Playground

You can format and share your code, change the Go version, and run your code using the Go playground server.

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New Features in GoLand 2022.2

A selection of useful features from GoLand 2022.2.

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Changing the font size in the editor

Use a keyboard shortcut to change the font size in the editor.

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Rename constants that use reserved names

Rename a constant if it uses a name of a built-in constant.

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Run Anything

Launch run/debug configurations, applications, scripts, commands, tasks, and open recent projects.

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Group multiple `use` directives in `go.work`

Merge multiple `use` directives in `go.work` into one directive.

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Convert empty interfaces to `any`

Check and replace empty interfaces that are used as types or type constraints.

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Delete a type parameter with an empty parameter list

Type parameters with empty parameter lists are reported as errors, but you have a quick-fix to put it right.

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Fuzz testing

Automate your tests by continuously submitting various input.

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Fill Paragraph for Go Comments

Ensure that comments have the width you like.

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New Features in GoLand 2021.2

A selection of useful features from GoLand 2021.2

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Declare a targeted Go version in go.mod

The IDE is aware of targeted Go versions

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Improved display of attached projects

Work with multiple projects at once from the same IDE window

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Go 1.17: Convert slice to array pointer

With Go 1.17, it is possible to covert a slice to an array pointer

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Load go.mod changes manually

Take control of when go.mod files are refreshed

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Create a Scratch file from selection

Create scratches faster and get the contents you want to test pre-populated

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Remove empty scratches automatically

Let the IDE handle the cleanup after testing your ideas

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Run gofmt after the builtin formatter

Ensure that your code is always formatted with gofmt.

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Select the builtin Terminal cursor shape

Make the terminal your own, with the cursor shape you want

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Detect unused dependencies in go.mod files

Cleanup go.mod files and keep them lean

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New Features in GoLand 2021.1

A selection of useful features from GoLand 2021.1

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Add keys to struct field tags

Quickly add JSON, XML, or custom keys to all struct fields

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Add new fields to struct types from JSON

Add new fields in your API objects with a copy-paste

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Change struct tag style

Quickly change from different styles the struct tags

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Create getters and setters for struct fields

Generate the support code to access fields indirectly, via getters and setters

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Create missing struct types with all fields

Prototype your code then worry about creating the types

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Extract Type Refactoring

Extract a type into its own definition and improve the reusability in your code

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Support for go:embed directive

Embed files and folders into your binaries with no external tool

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Handle Go errors by using a Postfix Completion

Keep writing code as you would and use the Postfix Completion to generate the boilerplate

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Convert JSON to Go types via copy-paste

Converting a JSON response to a Go type has never been faster than this

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Quickly handle errors in Go

Handling errors is essential in any application

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Rename Go module refactoring

Upgrade Go modules to newer versions with ease

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Run Target support via WSL

Run your application or tests in Windows Subsystem for Linux (WSL) with ease

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Detect incorrect usages of t/b.Fatal* calls in goroutines

Find if tests or benchmarks are using t/b.Fatal* calls inside goroutines incorrectly

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New Features in GoLand 2020.3

A selection of useful features from GoLand 2020.3

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Assert completion in testify

Write testify asserts faster thanks to the IDE smartness

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Better time format in completion

Use the commonly known date/time formatting strings while writing time formatting in Go

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Dump goroutines from a running application

Inspect the goroutines and memory of your application as it runs

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Go 1.16: retract directive

Retract specific versions of your modules

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Inline watches in debugger

Keep your eyes on the code at all times

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Detect incorrect usage of Println/Printf like functions

Formatting functions from packages such as pkg/errors, logrus or zap

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Check context.CancelFunc usage

Ensure that the cancel function is always called

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Live Template to create a for loop in benchmark functions

Benchmark loops are repetitive, so let the IDE handle this for you

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Live Template to create test function

Write tests faster thanks to the builtin func Test live template.

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Live Template to write benchmark function

Write benchmarks quicker thanks to the builtin bench live template.

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Navigate to subtests in table tests

Jump to the specific test case from the results window

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Rerun testify subtests

Rerun just the subtest you need from a testify suite.

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Run individual testify test suites

Run only the testify test suites or subtests that matter to you

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Run a single test from a table test

Focus your testing on new test cases or tests that fail

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Stop a Remote process after debugging it

Clean-up processes after interacting with them in remote debugging scenarios

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Completion for testify test names

Let your IDE add constructor arguments to your instance.

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Detect variable shadowing while writing Go code

Easily spot where you shadow variables that you did not intend to

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General Tips & Tricks

Become an IDE power-user with these bite-sized tips and tricks.

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Add Line After/Before

Smart-add a line, from the middle of a line, after or before the current line.

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Adding Fields To a Struct

Let your IDE add constructor arguments to your instance.

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Navigate Cursor Position Back and Forth

Navigate back to where you were, or where you went.

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Disable Tabs

Save space and stay keyboard-centric by turning off the tabs.

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Evaluate Expression During Debugging

Select your code and execute it, in the right context.

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Generate Imports While Typing

Avoid interruption by letting GoLand generate your imports as you type.

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Install and import

While typing a symbol, let GoLand install it and generate the import.

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Activate Navigation Bar

Bring up the Navigation Bar as needed, let it disappear when finished.

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Find In Path With Navigation Bar

Use keyboard and Navigation Bar to find files under a path.

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Create New File With Navigation Bar

Activate the Navigation Bar and create a new file somewhere in the project tree.

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Navigate to Symbol

Navigate your project by code, not files.

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Optimize Imports

Automate the organizing and cleaning up of your Go imports with Optimize Imports.

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Reduce Clutter by Disabling Tools

Save space by turning off various toolbars and Project Tool.

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Rename a File and Its References

Change your mind on a file name, and the IDE makes all the changes for you.

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Reformat Code

Tell GoLand to clean up indentation and other code style in your file.

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Run Single Test

Speed up testing by focusing on one test.

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Split Screen Without Tabs

Get your code and tests side-by-side without using tabs.

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Complete Current Statement

Add trailing commas or braces and move the cursor with a single keystroke

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Editing Tips & Tricks

Learn some of the most useful Editing features of GoLand.

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Call Hierarchy

Analyze call trees for functions or methods

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Compare with clipboard

Compare text, files or directories and even use the clipboard contents

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Custom Structure tags

Add custom tags to any fields from structures

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Expanding/shrinking selection

Select portions of code that you need to, faster

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Generate a test for an element

Automate test generation

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Hide all tool windows

Hide all the tool windows in the IDE

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Go to/from a test

Navigate to and from a test subject like a method or function

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Implement an interface

Implementing an interface is a common task that Go programmers need to do

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Jump to the Navigation Bar

Get an overview of your current location, and the project itself

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Multiple selections

Select multiple items faster

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Navigate between opened files using the Switcher

Don't use the mouse to quickly move between multiple files

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Navigate to File

Jump to a file without using the Project Tool Window, and your mouse

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Paste from history

Paste from the clipboard even if it's not the last item you copied into it

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Recent Locations

Jump back and forth between files using code snippets you've recently seen

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Select all occurrences in a file

Quickly select all occurrences of a piece of text in the current file

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Select in

Select the current file in the Project or Changes view and more

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Show usages

Quickly discover the usages of the element your cursor is at

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Speed typing

Quickly navigate to or filter any list of items in the IDE

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Structure tags

Quickly add tags to any fields from structures

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Switch to the editor

Get the focus back to the editor regardless what is currently focused

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Structure popup

View the file or whole package structure and navigate to any element

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Type Hierarchy

Discover what types implement an interface or what interfaces are implemented by a type

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Completion Tips & Tricks

Know everything there is to know about Code Completion.

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Basic Code Completion

Code completion that helps you get the job done

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Code Completion in Language Injections

See how to use code completion inside strings and other places

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Code completion in Evaluate Expression, Watches or Conditional Breakpoints

The debugger also has code completion capabilities.

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Code completion in Run Configurations

Run configurations also have code completion capabilities.

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Completion for non-imported Go Modules

Import a module even if it was imported or used in your project

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Completion with the Tab key

A small, but handy feature that makes it a little easier to complete symbol names.

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Cyclic Expand Word a.k.a. Hippie Completion

Complete any word any from the current open files.

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Exclude items from auto-imports and completion

Exclude certain paths from auto-import and completion

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Method-like completion for functions

Completion for searching for functions that accept parameters of a certain type.

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Live Templates

Add your own completion items via code snippets

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View Parameter Info

Quickly see function arguments and argument types.

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Smart Code Completion

The king of code completion in GoLand.

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Postfix Completion

Transform an expression into another one.

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Partial Match Completion

Complete anything by typing just parts of the identifier