late-binding

I have a VBA script for Excel that adds a small procedure in the active workbook. The final version will add a procedure that auto-saves backup copies of the workbook. The code requires the Microsoft Visual Basic for Applications Extensibility 5.3 library which I can add manually, but I'm interested in having a single script that can add that library into Excel and then use it. Here's the code that adds the library reference to Excel. It works. On Error Resume Next ' If library already referenced, ignore the error ThisWorkbook.VBProject.References.AddFromGuid _ GUID:="{0002E157-0000-0000-C000

I'd like to access a COM library via late binding. How can I find out its progID? Type oClassType = Type.GetTypeFromProgID("THE MISSING PROGID"); cmsjr The progID is generally going to be of the form Library.Class, you can view what classes a COM library exposes using oleview. The feature you want in oleview is View TypeLib (three little red triangles). The Library name will be at the top and you will want to use the name of the class as seen under CoClasses 来源： https://stackoverflow.com/questions/1272061/how-to-find-out-a-com-prog-id

Imagine the following hypothetical class structure, not an all too uncommon scenario with all PHPdoc hinting set up correctly: class BaseFilter { /** ...base methods... */ } class TextFilter extends BaseFilter { public function setMinLength($len) { /** ...irrelevant */ } } class SomethingWithFilters { /** * @param BaseFilter $filter A valid filter to be added. * @return BaseFilter The filter that was added for easy chaining */ public function addFilter(BaseFilter $filter) { $this->filters[] = $filter; return $filter; } /** @var BaseFilter[] A list of filters */ private $filters = []; } Now I

Most PHP IDEs rely on phpdoc to get hints about the type of an expression. Yet, I use frequently this pattern, which doesn't seem to be covered: class Control { private $label = ''; /** @return ??? */ public static function Make(){ return new static(); } /** @return ??? */ public function WithLabel($value){ $this->label = $value; return $this; } /** @return void */ public function Render(){ /* ... */ } } class Textbox extends Control { private $text = ''; /** @return ??? */ public function WithText($text){ $this->width = $text; return $this; } } Now I can use the classes like this: Textbox:

Is it somehow possible to get the location of PHP file, evaluated at runtime? I am seeking something similar to the magic constant __DIR__ , but evaluated at runtime, as a late binding. Similar difference with self and static : __DIR__ ~ self ??? ~ static My goal is defining a method in an abstract class, using __DIR__ which would be evaluated respectively for each heir class. Example: abstract class Parent { protected function getDir() { // return __DIR__; // does not work return <<I need this>>; // } } class Heir extends Parent { public function doSomething() { $heirDirectory = $this->getDir

first of all, sorry for the title, I couldn't find a better one. The following code is a minimalized version of a problem I have in my Python program (I am a newbie btw.). def onClick(i): print "This is Button: " + str(i) return def start(): b = [0 for x in range(5)] win = Tkinter.Tk() for i in range(5): b[i] = Tkinter.Button(win,height=10,width=100,command=lambda : onClick(i)) b[i].pack() return What it does: Whatever Button I click, it says "This is Button: 4". What I want: First button should say "This is Button: 0" and so on. Is this a wanted behaviour of Python? And if the answer is yes,