Unity3D plugin usage for csharp. Original gist for Unity javascript can be found on https://gist.github.com/keijiro/1241999

Plugin.cs

import System.Runtime.InteropServices;
 
#if UNITY_IPHONE && !UNITY_EDITOR
 
[DllImport ("__Internal")] static extern private void _PluginFoo(int arg);
 
#else
 
static private void _PluginFoo(int arg) {
  // iOS以外での代替処理。
}
 
#endif
 
public static void Foo(int arg) {
  _PluginFoo(arg);
}