Add pop command (closes #9), update to v0.4.0

build.gradle

@@ -6,7 +6,7 @@ plugins {
 }
 
 group 'com.github.antoinejt'
-version '0.3.7'
+version '0.4.0'
 
 sourceCompatibility = 1.8
 

src/main/java/com/github/antoinejt/jasc/ConsoleUI.java

@@ -33,7 +33,7 @@ final class ConsoleUI {
     private static final List<String> commands = Collections.unmodifiableList(new ArrayList<String>() {{
         addAll(functions.keySet()); // functions are added here
         addAll(operators.keySet()); // operators are added here
-        addAll(Arrays.asList("=", "help", "clear", "quit")); // Commands
+        addAll(Arrays.asList("=", "help", "clear", "pop", "quit")); // Commands
     }});
 
     // TODO Replace that by some txt templates (use of MVC
@@ -61,6 +61,7 @@ private static void displayHelp() {
                 "= : Print the content of the stack",
                 "help : Show the list of available commands",
                 "clear : Reset stack content",
+                "pop : Remove last number from the stack",
                 "quit : Allows to quit").print();
     }
 
@@ -133,6 +134,9 @@ static void useConsole() throws Exception {
                 case "clear":
                     calculatorEngine.clear();
                     break;
+                case "pop":
+                    calculatorEngine.removeLastNumber();
+                    break;
                 case "quit":
                     System.exit(0);
                 default:

src/main/java/com/github/antoinejt/jasc/Constants.java

@@ -1,6 +1,6 @@
 package com.github.antoinejt.jasc;
 
 final class Constants {
-    static final String VERSION = "0.3.7";
-    static final String LAST_UPDATE = "September 28th 2019";
+    static final String VERSION = "0.4.0";
+    static final String LAST_UPDATE = "September 29th 2019";
 }

src/main/java/com/github/antoinejt/jasc/calculator/CalculatorEngine.java

@@ -101,6 +101,10 @@ public void applyFunction(FunctionType functionType) throws CalculatorException
         }
     }
 
+    public void removeLastNumber(){
+        stack.pop();
+    }
+
     public void operate(OperationType operation) throws OperandException, CalculatorException {
         int stackSize = stack.getSize();