[nb] Sync

cmd/leetcode/main.go

@@ -0,0 +1,38 @@
+// package is like namespace. Every file has one
+package main
+
+// HINT: To import just file you can the format import "<package-name">
+import (
+	"github.com/spf13/cobra"
+  "io/ioutil"
+  "log"
+  "fmt"
+)
+
+// Like in C/C++/Java there is a main function
+func main() {
+  var listExer = &cobra.Command {
+    Use: "leetcode",
+    Short: "list all exercises",
+    Long: "leetcode ls",
+    Run: func(cmd *cobra.Command, args []string) {
+      leet_code_dir := "/home/aerex/.nb/leetcode/exercises"
+      files, err := ioutil.ReadDir(leet_code_dir)
+      if err != nil {
+        log.Fatal(err)
+      }
+
+      for _, file := range files {
+        fmt.Println(file.Name())
+      }
+    },
+  }
+
+  var rootCmd = &cobra.Command{
+    Use: "leetcode <command>",
+  }
+  rootCmd.AddCommand(listExer)
+
+}
+
+