96 lines
2.1 KiB
Markdown
96 lines
2.1 KiB
Markdown
A simple `helloworld` for Golang in VsCode.
|
|
|
|
# Golang the compiler
|
|
|
|
Download Golang [installer](https://go.dev/dl/). A least on Mac the installer shall be able to deal with [updating OS](https://gist.github.com/Linerre/f11ad4a6a934dcf01ee8415c9457e7b2) `PATH` environment variable with `$GOPATH/bin`.
|
|
|
|
## Debugger
|
|
|
|
```bash
|
|
go install -v github.com/go-delve/delve/cmd/dlv@latest
|
|
```
|
|
|
|
To install / update the goTools in VsCode:
|
|
|
|
Click `cmd`+`shift`+`p` and search for _Go: Install/Update tools_
|
|
|
|
# VsCode IDE
|
|
|
|
- Install [Visual Studio Code](https://code.visualstudio.com)
|
|
- `golang` extension
|
|
To launch *VS Code Quick Open* press (Ctrl + P), type: `ext install Go`, hit enter. Follow basic instructions.
|
|
|
|
# The Project
|
|
|
|
Inside `Visual Studio Code` Open Folder `Ctrl + Shift + E` , e.g.: `$USER\code\hello\`. Then Open `hello.go` from that folder. Or make new file (Ctrl + N) and save it on this folder:
|
|
|
|
```go
|
|
package main
|
|
|
|
import "fmt"
|
|
|
|
func main() {
|
|
name := "World"
|
|
fmt.Println(getGreeting(name))
|
|
}
|
|
|
|
func getGreeting(name string) string {
|
|
return fmt.Sprintf("Hello, %s!", name)
|
|
}
|
|
```
|
|
|
|
Some useful hotkeys:
|
|
- `Ctrl + Shift + D` - Open Debugger
|
|
- `F9` - set or toggle Breakpoint. *Try this line `name := "World"`*
|
|
- `F5` - Start Debugging or to Run the Application. If asked to select environment: select `Go`
|
|
- `F10` - Step Over
|
|
- `F11` - Step Into
|
|
- `Shift + F11` - Step Out
|
|
- `Shift + F5` - Stop Debugging
|
|
- `Ctrl + Shift + F5` - Restart Debugging
|
|
|
|
Typical aka untouched `launch.json`:
|
|
|
|
```json
|
|
{
|
|
"version": "0.2.0",
|
|
"configurations": [
|
|
{
|
|
"name": "Launch",
|
|
"type": "go",
|
|
"request": "launch",
|
|
"mode": "debug",
|
|
"program": "${workspaceRoot}",
|
|
"env": {},
|
|
"args": [],
|
|
"showLog": true,
|
|
}
|
|
]
|
|
}
|
|
```
|
|
|
|
# Custom build task
|
|
|
|
Create `tasks.json`:
|
|
|
|
```json
|
|
{
|
|
"version": "2.0.0",
|
|
"tasks": [
|
|
{
|
|
"label": "go build",
|
|
"type": "shell",
|
|
"command": "go build -o bin/tui ./...",
|
|
"group": "build",
|
|
"problemMatcher": ["$go"],
|
|
}
|
|
]
|
|
}
|
|
```
|
|
|
|
Add this line to the desired run command in your `launch.json`
|
|
|
|
```json
|
|
"preLaunchTask": "go build",
|
|
```
|