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Searching if value exists in a list of objects using Linq

... LINQ defines an extension method that is perfect for solving this exact problem: using System.Linq; ... bool has = list.Any(cus => cus.FirstName == "John"); make sure you reference System.Core.dll, that's where LINQ ...
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How can I round down a number in Javascript?

How can I round down a number in JavaScript? 11 Answers 11 ...
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Finding the average of a list

I have to find the average of a list in Python. This is my code so far 23 Answers 23 ...
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Heroku deployment error H10 (App crashed)

I have a RoR app working on my local computer, but when I send it to heroku, it crashes. The error log gives an error H10 & says: ...
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Why am I getting ibtool failed with exit code 255?

All of a sudden I can't build my project. I get the following compiler error: 33 Answers ...
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How do I attach events to dynamic HTML elements with jQuery? [duplicate]

... I am adding a new answer to reflect changes in later jQuery releases. The .live() method is deprecated as of jQuery 1.7. From http://api.jquery.com/live/ As of jQuery 1.7, the .live() method is deprecated. Use .on() to attach e...
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convert a list of objects from one type to another using lambda expression

I have a foreach loop reading a list of objects of one type and producing a list of objects of a different type. I was told that a lambda expression can achieve the same result. ...
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What is a thread exit code?

What exactly is a thread exit code in the Output window while debugging? What information it gives me? Is it somehow useful or just an internal stuff which should not bother me? ...
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Most efficient T-SQL way to pad a varchar on the left to a certain length?

... This is simply an inefficient use of SQL, no matter how you do it. perhaps something like right('XXXXXXXXXXXX'+ rtrim(@str), @n) where X is your padding character and @n is the number of characters in the resulting string (assuming you n...
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How to change MySQL data directory?

... Stop MySQL using the following command: sudo /etc/init.d/mysql stop Copy the existing data directory (default located in /var/lib/mysql) using the following command: sudo cp -R -p /var/lib/mysql /newpath edit the MySQL configuration f...