joplin-notes/joplin notion extension/Web Development/Go/extras.md

extras

• to get type of variable fmt.Println(reflect.TypeOf(student))

• for signals signal.Notify(sc, syscall.SIGINT, syscall.SIGTERM, os.Interrupt)

  • sc — a chan os.Signal (must be buffered, e.g. make(chan os.Signal, 1)) that will receive the signal values.
  • syscall.SIGINT — interrupt from the keyboard (Ctrl+C).
  • syscall.SIGTERM — polite termination request (e.g. kill or what Kubernetes sends on pod shutdown).
  • os.Interrupt — a platform-agnostic alias; on Unix it's the same as syscall.SIGINT, on Windows it also covers Ctrl+Break.

  for deeply mested objects printing in console

data, _ := json.MarshalIndent(m, "", "  ")
fmt.Printf("detected: %v\n", string(data))

 

go equivalent to fs.mkdirSync(dirPath,{recursive: true}

this will create directories recurselovely and wont throw error if it exist

err := os.MkdirAll(dirPath, 0755)

creating a build for all platfoms

script

#!/bin/bash
# Iterate through all supported GOOS/GOARCH combinations
go tool dist list | while read platform; do
    # Split platform into OS and ARCH
    GOOS=${platform%/*}
    GOARCH=${platform#*/}
    
    # Define output filename
    output_name="myapp-${GOOS}-${GOARCH}"
    if [ "$GOOS" = "windows" ]; then
        output_name+=".exe"
    fi
    
    # Build the binary
    env GOOS=$GOOS GOARCH=$GOARCH go build -o "$output_name" .
done