Added exjs.range to create an enumeration of ranges.

.gitignore

@@ -7,3 +7,5 @@ src/packages
 node_modules/**/*
 .idea*
 test/*.js
+test/*.js.map
+dist/*.js.map

Gruntfile.js

@@ -10,13 +10,15 @@
                 dest: 'dist/ex.js',
                 options: {
                     target: 'es5',
-                    declaration: true
+                    declaration: true,
+                    sourceMap: true
                 }
             },
             test: {
                 src: ['test/**/*.ts'],
                 options: {
-                    target: 'es5'
+                    target: 'es5',
+                    sourceMap: true
                 }
             }
         },

bower.json

@@ -1,6 +1,6 @@
 {
   "name": "exjs",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "homepage": "https://github.com/BSick7/exjs",
   "authors": [
     "BSick7 <brad.sickles@gmail.com>"

dist/ex.d.ts

@@ -119,6 +119,9 @@ declare module exjs {
 }
 declare module exjs {
 }
+declare module exjs {
+    function range(start: number, end: number, increment?: number): IEnumerable<number>;
+}
 declare module exjs {
 }
 declare module exjs {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "exjs",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "description": "Extension library",
   "main": "Gruntfile.js",
   "directories": {

src/range.ts

@@ -0,0 +1,30 @@
+/// <reference path="enumerable.ts" />
+
+module exjs {
+    function rangeEnumerator (start: number, end: number, increment: number): IEnumerator<number> {
+        var i = start - increment;
+        var e = {
+            current: undefined,
+            moveNext: function (): boolean {
+                i += increment;
+                if (i >= end)
+                    return false;
+                e.current = i;
+                return true;
+            }
+        };
+        return e;
+    }
+
+    export function range (start: number, end: number, increment?: number): IEnumerable<number> {
+        start = start || 0;
+        end = end || 0;
+        if (start > end)
+            throw new Error("Start cannot be greater than end.");
+        if (increment == null)
+            increment = 1;
+        var e = new Enumerable<number>();
+        e.getEnumerator = () => rangeEnumerator(start, end, increment);
+        return e;
+    }
+}

test/enum.ts

@@ -26,6 +26,30 @@ test("array", () => {
     strictEqual(arr2[4], 5);
 });
 
+test("range", () => {
+    var arr = exjs.range(0, 1).toArray();
+    strictEqual(arr.length, 1, "#1");
+    strictEqual(arr[0], 0, "#1");
+
+    arr = exjs.range(5, 10).toArray();
+    strictEqual(arr.length, 5, "#2");
+    strictEqual(arr[0], 5, "#2");
+    strictEqual(arr[1], 6, "#2");
+    strictEqual(arr[2], 7, "#2");
+    strictEqual(arr[3], 8, "#2");
+    strictEqual(arr[4], 9, "#2");
+
+    arr = exjs.range(1, 36, 5).toArray();
+    strictEqual(arr.length, 7);
+    strictEqual(arr[0], 1, "#3");
+    strictEqual(arr[1], 6, "#3");
+    strictEqual(arr[2], 11, "#3");
+    strictEqual(arr[3], 16, "#3");
+    strictEqual(arr[4], 21, "#3");
+    strictEqual(arr[5], 26, "#3");
+    strictEqual(arr[6], 31, "#3");
+});
+
 test("aggregate", () => {
     var arr = [1, 2, 3, 4, 5, 6, 7, 8];
     strictEqual(arr.en().aggregate(0, (acc, cur) => acc + cur), 36);