fix #7539 by adding clojure examples (#7552)

doc/clojure/Clojure.ipynb

@@ -133,6 +133,13 @@
     "(. classpathTest getObjectTest)"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Array of Maps with Properties"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -142,6 +149,13 @@
     "[{:foo 1}{:foo 2}]"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Interactive Plot"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -159,6 +173,38 @@
     "                        (.setY [0, 1, 6, 5, 2, 8]))))"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## EasyForm"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "(def form (doto (com.twosigma.beakerx.easyform.EasyForm. \"Test Form\")\n",
+    "                (.addTextField \"Name\")\n",
+    "                (.addButton \"Reverse\" \"reverse\")))\n",
+    "form"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "tags": [
+     "reverse"
+    ]
+   },
+   "outputs": [],
+   "source": [
+    "(reverse (get form \"Name\"))"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {
@@ -204,12 +250,53 @@
     "(new IntSlider)"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## IPyVolume visualization widget\n",
+    "\n",
+    "[ipyvolume](https://github.com/maartenbreddels/ipyvolume) works with Clojure, and the other [3D widgets](../groovy/3D.ipynb) probably work too.  Note, the widget JS needs to be installed in advance of starting the notebook:\n",
+    "```\n",
+    "conda install -c conda-forge ipyvolume\n",
+    "```\n",
+    "See the [source of this example](https://github.com/maartenbreddels/ipyvolume/pull/140#issuecomment-394777662)."
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "%classpath add mvn com.github.twosigma ipyvolume master-SNAPSHOT"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "(import ipyvolume.PyLab)\n",
+    "\n",
+    "(defn ball \n",
+    "    [size radius]\n",
+    "    (let [data           (make-array Float/TYPE size size size)\n",
+    "          square         #(* % %)\n",
+    "          center         #(- % (/ size 2))\n",
+    "          sum            (partial reduce +)\n",
+    "          sum-of-squares #(sum (map square %))]\n",
+    "        (doseq [i (range size)\n",
+    "                j (range size)\n",
+    "                k (range size)\n",
+    "                :let [[x y z] (map center [i j k])] \n",
+    "                :when (> (square radius) \n",
+    "                         (sum-of-squares [x y z]))]\n",
+    "             (aset data i j k (float 1)))\n",
+    "        data))\n",
+    "(PyLab/volShow (ball 32 12))"
+   ]
   }
  ],
  "metadata": {
@@ -225,7 +312,20 @@
    "mimetype": "text/x-clojure",
    "name": "Clojure",
    "nbconverter_exporter": "",
-   "version": "1.7"
+   "version": "1.9.0"
+  },
+  "toc": {
+   "base_numbering": 1,
+   "nav_menu": {},
+   "number_sections": false,
+   "sideBar": false,
+   "skip_h1_title": false,
+   "title_cell": "Table of Contents",
+   "title_sidebar": "Contents",
+   "toc_cell": false,
+   "toc_position": {},
+   "toc_section_display": false,
+   "toc_window_display": false
   }
  },
  "nbformat": 4,