Merge pull request #3 from vsachs/get_argument_result

Add examples & documentation

README.md

@@ -137,6 +137,13 @@ You can implement sub-commands in your CLI using `parser.NewCommand()` or go eve
 Since parser inherits from command, every command supports exactly same options as parser itself,
 thus allowing to add arguments specific to that command or more global arguments added on parser itself!
 
+You can also dynamically retrieve argument values:
+```
+var myInteger *int = parser.Int("i", "integer", ...)
+parser.Parse()
+fmt.Printf("%d", *parser.GetArgs()[0].GetResult().(*int))
+```
+
 #### Basic Option Structure
 
 The `Option` structure is declared at `argparse.go`:

examples/commands/commands.go

@@ -16,6 +16,7 @@ func main() {
 
 	// Add top level commands `stop`
 	stopCmd := parser.NewCommand("stop", "Will stop a process")
+	stopCmd.Int("-t", "--time", nil)
 
 	// Parse command line arguments and in case of any error print error and help information
 	err := parser.Parse(os.Args)
@@ -30,6 +31,12 @@ func main() {
 		fmt.Println("Started process")
 	} else if stopCmd.Happened() { // Check if `stop` command was given
 		// Stopping a process
+		for _, arg := range stopCmd.GetArgs() {
+			switch val := arg.GetResult().(type) {
+			case int:
+				fmt.Printf("Arg: %s = %d\n", arg.GetLname(), val)
+			}
+		}
 		fmt.Println("Stopped process")
 	} else {
 		// In fact we will never hit this one