Added string conversion example

slides.rst

@@ -144,11 +144,31 @@ Implementation:
 
 .. code-block:: cpp
     :include: simplefunctions/main.cc
-    :start-after: {
-    :end-before: }
+    :start-at: Handle
+    :end-at: }
 
 explain scope.Close
 
+Strings to-and-fro
+------------------
+
+v8::String -> C string
+
+.. code-block:: cpp
+    :include: strings/main.cc
+    :start-after: v8;
+    :end-before: Handle<Value> Read
+
+Strings to-and-fro
+------------------
+
+C string -> v8::String
+
+.. code-block:: cpp
+    :include: strings/main.cc
+    :start-at: Handle<Value> Read
+    :end-at: }
+
 Simple objects
 --------------
 

strings/main.cc

@@ -0,0 +1,47 @@
+#include <stdio.h>
+#include <string.h>
+#include <v8.h>
+#include <node.h>
+using namespace v8;
+
+Handle<Value> Print(const Arguments &args) {
+    HandleScope scope;
+
+    for (int i = 0; i < args.Length(); i++) {
+        if (!args[i]->IsString())
+            continue;
+
+        // also String::AsciiValue
+        String::Utf8Value val(args[i]);
+        printf("%s ", *val); // <<<<<<
+    }
+    return Undefined();
+}
+
+Handle<Value> Read(const Arguments &args) {
+    HandleScope scope;
+
+    char str[1024];
+    fgets(str, 1023, stdin);
+
+    Local<String> v8String = String::New(str, strlen(str));
+    return scope.Close(v8String);
+}
+
+extern "C" {
+    static void Init(Handle<Object> target) {
+        HandleScope scope;
+
+        Handle<FunctionTemplate> printTpl =
+            FunctionTemplate::New(Print);
+
+        Handle<FunctionTemplate> readTpl =
+            FunctionTemplate::New(Read);
+
+        target->Set(String::New("print"),
+                    printTpl->GetFunction());
+        target->Set(String::New("read"),
+                    readTpl->GetFunction());
+    }
+    NODE_MODULE(strings, Init)
+}

strings/test.js

@@ -0,0 +1,5 @@
+var strings = require('./build/Release/strings')
+strings.print("this", "is", 5, 6, "strings\n");
+strings.print("Enter name:");
+var name = strings.read();
+strings.print("Hi", name);

strings/wscript

@@ -0,0 +1,13 @@
+import Options
+
+def set_options(opt):
+    opt.tool_options("compiler_cxx")
+
+def configure(conf):
+    conf.check_tool("compiler_cxx")
+    conf.check_tool("node_addon")
+
+def build(bld):
+    obj = bld.new_task_gen("cxx", "shlib", "node_addon")
+    obj.target = "strings"
+    obj.source = "main.cc"