add difference method declaration

AnthonyGiretti · May 25, 2018 · 2762539 · 2762539
1 parent a6965f7
commit 2762539
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diff --git a/src/app/app.component.ts b/src/app/app.component.ts
@@ -22,6 +22,9 @@ export class AppComponent implements OnInit {
     console.log('compact sample :');
     console.log(this._arraysService.compact(['Apple', 0, 'Banana', '', 'Grapefruit']));
 
+    console.log('concat sample :');
+    console.log(this._arraysService.concat(['Apple', 'Banana'], 'Grapefruit', 'Lemon'));
+
   }
 
 }
diff --git a/src/services/Arrays.ts b/src/services/Arrays.ts
@@ -38,4 +38,12 @@ export class ArraysService {
     public concat<T>(array: Array<T>, ...values: Array<T>): Array<T> {
         return _.concat(array, ...values);
     }
+
+    /**
+     * Creates an array of array values not included in the other given arrays using SameValueZero for equality comparisons.
+     * The order and references of result values are determined by the first array.
+     */
+    public difference<T>(array: Array<T>, ...values: Array<T>): Array<T> {
+        return _.difference(array, ...values);
+    }
 }