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Why there is semicolon at the start of a JavaScript function?

Very often while reviewing the code for my team, I will come across a semicolon at the start of JavaScript function as show below ; (function () { 'use strict'; ...and I often wondered what purpose it served. Guess what. It is an insurance to make sure your script works fine when all other scripts are merged together; The leading ; in front of immediately-invoked function expressions (iffe) is there to prevent errors when appending the file during concatenation to a file containing an expression not properly terminated with a ;. So there you go. Now you know what that little semicolon is doing there in your code.

unable to download wsdl file while adding web reference

If you get this error while adding web reference, simply delete the reference, close and reopen the project. Now add the web reference again but this time stick ?wsdl at the end of url. This reolves the problem.

What is Event Sourcing?

If you scratching your head and wondering what is Event Sourcing, this is a very good article to start. https://www.erikheemskerk.nl/event-sourcing-awesome-powerful-different/ I couldn't have explained it any better.

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