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Check if a given key already exists in a dictionary

I wanted to test if a key exists in a dictionary before updating the value for the key. I wrote the following code: 16 Answ...
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How to use LINQ to select object with minimum or maximum property value

I have a Person object with a Nullable DateOfBirth property. Is there a way to use LINQ to query a list of Person objects for the one with the earliest/smallest DateOfBirth value. ...
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Pythonic way of checking if a condition holds for any element of a list

I have a list in Python, and I want to check if any elements are negative. Specman has the has() method for lists which does: ...
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Using ThreadPool.QueueUserWorkItem in ASP.NET in a high traffic scenario

I've always been under the impression that using the ThreadPool for (let's say non-critical) short-lived background tasks was considered best practice, even in ASP.NET, but then I came across this article that seems to suggest otherwise - the argument being that you should leave the ThreadPool to ...
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How to use mod operator in bash?

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TypeError: ObjectId('') is not JSON serializable

My response back from MongoDB after querying an aggregated function on document using Python, It returns valid response and i can print it but can not return it. ...
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ruby send method passing multiple parameters

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jQuery - Trigger event when an element is removed from the DOM

I'm trying to figure out how to execute some js code when an element is removed from the page: 16 Answers ...
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What does it mean when MySQL is in the state “Sending data”?

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How to do Base64 encoding in node.js?

Does node.js have built-in base64 encoding yet? 7 Answers 7 ...