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What is a message pump?

...ce given there is not to do so. In one post it is stated "The Office APIs all assume you are running Office in an interactive session on a desktop, with a monitor, keyboard and mouse and, most importantly, a message pump." I'm not sure what that is. (I've been programming in C# for only about a y...
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What is the meaning and difference between subject, user and principal?

...utomation, applications, connections, etc. User - A subset of principal usually referring to a human operator. The distinction is blurring over time because the words "user" or "user ID" are commonly interchanged with "account". However, when you need to make the distinction between the broad clas...
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How to re-create database for Entity Framework?

...ed, if so, right click and delete. 2 )Go to Solution Explorer, click show All Files icon. 3) Go to App_Data, right click and delete all ".mdf" files for this project. 4) Delete Migrations folder by right click and delete. 5) Go to SQL Server Management Studio, make sure the DB for this project i...
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How to drop unique in MySQL?

...swered Oct 14 '09 at 8:12 Wael DalloulWael Dalloul 19.4k1111 gold badges4444 silver badges5555 bronze badges ...
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What's the @ in front of a string in C#?

...tring as a verbatim string literal - anything in the string that would normally be interpreted as an escape sequence is ignored. So "C:\\Users\\Rich" is the same as @"C:\Users\Rich" There is one exception: an escape sequence is needed for the double quote. To escape a double quote, you need to put...
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Convert XML to JSON (and back) using Javascript

...cts) and vice versa javascript conversion functions. The library is very small and doesn't require any other additional libraries. API functions new X2JS() - to create your instance to access all library functionality. Also you could specify optional configuration options here X2JS.xml2json - Conve...
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Google Maps API v3: How to remove all markers?

In Google Maps API v2, if I wanted to remove all the map markers, I could simply do: 31 Answers ...
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How do I create an abstract base class in JavaScript?

...l value instead of an object so as to continue application execution, it really depends on your implementation. This, in my opinion, is the correct way to implement abstract JS "classes". – dudewad Jan 18 '16 at 21:36 ...
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Ruby replace string with captured regex pattern

...d answer first without reading the entirety of answers. That seems to generally be the most efficient means of fixing a problem. Give Vicky a break! :) – Josh M. Jan 31 '14 at 3:43 ...
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What is the difference between an expression and a statement in Python?

...s, where operators include arithmetic and boolean operators, the function call operator () the subscription operator [] and similar, and can be reduced to some kind of "value", which can be any Python object. Examples: 3 + 5 map(lambda x: x*x, range(10)) [a.x for a in some_iterable] yield 7 Stat...