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

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+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 <pid> 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.
+
+ &nbsp;
+  for deeply mested objects printing in console
+
+  ```go
+data, _ := json.MarshalIndent(m, "", "  ")
+fmt.Printf("detected: %v\n", string(data))
+```
+
+&nbsp;
+
+go equivalent to `fs.mkdirSync(dirPath,{recursive: true}`
+
+this will create directories recurselovely and wont throw error if it exist
+```go
+err := os.MkdirAll(dirPath, 0755)
+```
+
+creating a build for all platfoms
+
+script
+```sh
+#!/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   
+```