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Linq: What is the difference between Select and Where

The Select and Where methods are available in Linq. What should every developer know about these two methods? For example: when to use one over the other, any advantages of using one over the other, etc. ...
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How to add extra namespaces to Razor pages instead of @using declaration?

Is there some sort of magic I need to use to get the namespaces in the pages/namespaces element in the webconfig? 5 Answe...
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How do I reverse a C++ vector?

Is there a built-in vector function in C++ to reverse a vector in place? 6 Answers 6 ...
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Linq to Sql: Multiple left outer joins

I'm having some trouble figuring out how to use more than one left outer join using LINQ to SQL. I understand how to use one left outer join. I'm using VB.NET. Below is my SQL syntax. ...
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returning a Void object

What is the correct way to return a Void type, when it isn't a primitive? Eg. I currently use null as below. 5 Answers ...
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How to calculate time in hours between two dates in iOS

How can I calculate the time elapsed in hours between two times (possibly occurring on different days) in iOS? 5 Answers ...
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Write bytes to file

... If I understand you correctly, this should do the trick. You'll need add using System.IO at the top of your file if you don't already have it. public bool ByteArrayToFile(string fileName, byte[] byteArray) { try { ...
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How to make graphics with transparent background in R using ggplot2?

I need to output ggplot2 graphics from R to PNG files with transparent background. Everything is ok with basic R graphics, but no transparency with ggplot2: ...
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How can I tell if my server is serving GZipped content?

...the conf file and now I'm trying to see if it works. YSlow says it's not, but 5 out of 6 websites that do the test say it is. How can I get a definite answer on this and why is there a difference in the results? ...
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What is the difference between SqlCommand.CommandTimeout and SqlConnection.ConnectionTimeout?

Is there any difference between SqlCommand.CommandTimeout and SqlConnection.ConnectionTimeout in .NET? 6 Answers ...