From 2e35c9b49447e3f7f48b58ff4c75260934b62e5f Mon Sep 17 00:00:00 2001
From: Tung Bui <tung.bquang@gmail.com>
Date: Sat, 9 Sep 2023 15:52:53 +0700
Subject: [PATCH 1/2] groovy: improvement for more readable

---
 topics/groovy/helloworld/basic-concept.groovy | 51 ++++++++++++++-----
 1 file changed, 39 insertions(+), 12 deletions(-)

diff --git a/topics/groovy/helloworld/basic-concept.groovy b/topics/groovy/helloworld/basic-concept.groovy
index e63a3f3..775bd30 100644
--- a/topics/groovy/helloworld/basic-concept.groovy
+++ b/topics/groovy/helloworld/basic-concept.groovy
@@ -1,12 +1,18 @@
 // Greetings!
-println "Welcome to groovy!"
+println "Welcome to Groovy!"
 
+//------------------------
 // Working with variables
-myName = "Tung"
-myAge = 28
+//------------------------
+
+def myName = "Tung"
+def myAge = 28
 println "${myName} is ${myAge} years old!"
 
-// Working with if else
+//-------------------
+// Working with if-else
+//-------------------
+
 def number = 10
 
 if (number > 5) {
@@ -15,7 +21,10 @@ if (number > 5) {
     println("The number is not greater than 5.")
 }
 
-// Working with switch case
+//-----------------------
+// Working with switch-case
+//-----------------------
+
 def myFruit = "Banana"
 
 switch (myFruit) {
@@ -32,14 +41,20 @@ switch (myFruit) {
         println("It's something else.")
 }
 
+//--------------------
 // Working with for loop
+//--------------------
+
 def fruits = ["Apple", "Banana", "Cherry", "Watermelon", "Elderberry"]
 
 for (fruit in fruits) {
     println("I like $fruit")
 }
 
-// Working with function
+//----------------------
+// Working with functions
+//----------------------
+
 def factorial(n) {
     if (n == 0) {
         return 1
@@ -47,12 +62,17 @@ def factorial(n) {
         return n * factorial(n - 1)
     }
 }
-//-- Call the function and store the result in a variable
+
+// Call the function and store the result in a variable
 def result = factorial(5)
-//-- Print the result
+
+// Print the result
 println("Factorial of 5 is: $result")
 
-// Working with Map in groovy
+//-----------------------
+// Working with Map in Groovy
+//-----------------------
+
 // Create a map with key-value pairs
 def person = [
     "firstName": "John",
@@ -60,19 +80,26 @@ def person = [
     "age": 30,
     "city": "New York"
 ]
+
 // Access values in the map
 def firstName = person["firstName"]
 def age = person["age"]
+
 // Modify values in the map
 person["city"] = "Los Angeles"
+
 // Add a new key-value pair to the map
 person["email"] = "john.doe@example.com"
+
 // Iterate over the map
 person.each { key, value ->
     println("$key: $value")
 }
 
-// Working with try catch
+//--------------------
+// Working with try-catch
+//--------------------
+
 def divideNumbers(int dividend, int divisor) {
     try {
         def result = dividend / divisor
@@ -86,8 +113,8 @@ def divideNumbers(int dividend, int divisor) {
 
 // Example usage:
 try {
-    def devideResult = divideNumbers(10, 2)
-    println("Result: $devideResult")
+    def divideResult = divideNumbers(10, 2)
+    println("Result: $divideResult")
 } catch (Exception e) {
     println("An exception occurred: ${e.message}")
 }

From 1fa234605a50e387fab56c5c74827b1df7960237 Mon Sep 17 00:00:00 2001
From: Tung Bui <tung.bquang@gmail.com>
Date: Sat, 9 Sep 2023 15:57:18 +0700
Subject: [PATCH 2/2] groovy: decorate the console

---
 topics/groovy/helloworld/basic-concept.groovy | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/topics/groovy/helloworld/basic-concept.groovy b/topics/groovy/helloworld/basic-concept.groovy
index 775bd30..76dec1d 100644
--- a/topics/groovy/helloworld/basic-concept.groovy
+++ b/topics/groovy/helloworld/basic-concept.groovy
@@ -1,5 +1,10 @@
+// Function to print log messages in green color
+def consoleLog(message) {
+    println "\u001B[32m[INFO] $message\u001B[0m"
+}
+
 // Greetings!
-println "Welcome to Groovy!"
+consoleLog("Welcome to Groovy!")
 
 //------------------------
 // Working with variables
@@ -13,6 +18,8 @@ println "${myName} is ${myAge} years old!"
 // Working with if-else
 //-------------------
 
+consoleLog("Working with if-else")
+
 def number = 10
 
 if (number > 5) {
@@ -25,6 +32,8 @@ if (number > 5) {
 // Working with switch-case
 //-----------------------
 
+consoleLog("Working with switch-case")
+
 def myFruit = "Banana"
 
 switch (myFruit) {
@@ -45,6 +54,8 @@ switch (myFruit) {
 // Working with for loop
 //--------------------
 
+consoleLog("Working with for loop")
+
 def fruits = ["Apple", "Banana", "Cherry", "Watermelon", "Elderberry"]
 
 for (fruit in fruits) {
@@ -55,6 +66,8 @@ for (fruit in fruits) {
 // Working with functions
 //----------------------
 
+consoleLog("Working with functions")
+
 def factorial(n) {
     if (n == 0) {
         return 1
@@ -73,6 +86,8 @@ println("Factorial of 5 is: $result")
 // Working with Map in Groovy
 //-----------------------
 
+consoleLog("Working with Map in Groovy")
+
 // Create a map with key-value pairs
 def person = [
     "firstName": "John",
@@ -100,6 +115,8 @@ person.each { key, value ->
 // Working with try-catch
 //--------------------
 
+consoleLog("Working with try-catch")
+
 def divideNumbers(int dividend, int divisor) {
     try {
         def result = dividend / divisor