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Covariance, Invariance and Contravariance explained in plain English?
... say it is used to decide whether a method is overwritten or overloaded.
All of the above.
At heart, these terms describe how the subtype relation is affected by type transformations. That is, if A and B are types, f is a type transformation, and ≤ the subtype relation (i.e. A ≤ B means that ...
Differences between ExpandoObject, DynamicObject and dynamic
...c keyword to interact with a normal instance, the DLR performs late-bound calls to the instance's normal methods.
The IDynamicMetaObjectProvider interface allows a class to take control of its late-bound behavior.
When you use the dynamic keyword to interact with an IDynamicMetaObjectProvider imple...
Rebasing and what does one mean by rebasing pushed commits
...al to rebase again after another developer changes topic branch. Essentially, I have been using merge for quite sometime, but we are in same boat as, darwinweb.net/articles/86 and the history is almost unusable.
– Hemant Kumar
Apr 26 '10 at 18:13
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Using .NET, how can you find the mime type of a file based on the file signature not the extension
...
In Urlmon.dll, there's a function called FindMimeFromData.
From the documentation
MIME type detection, or "data sniffing," refers to the process of determining an appropriate MIME type from binary data. The final result depends on a combination of server...
What is an IndexOutOfRangeException / ArgumentOutOfRangeException and how do I fix it?
...emember this when you create and access an array.
Array Length
In C#, usually, arrays are 0-based. It means that first element has index 0 and last element has index Length - 1 (where Length is total number of items in the array) so this code doesn't work:
array[array.Length] = 0;
Moreover plea...
When is an interface with a default method initialized?
...ough to trigger the initialization. The default method doesn't have to be called or overridden or even mentioned, nor does the presence of an abstract method trigger initialization.
My speculation is that the HotSpot implementation wanted to avoid adding class/interface initialization checking into...
Send email using java
....class", SSL_FACTORY);
props.setProperty("mail.smtp.socketFactory.fallback", "false");
props.setProperty("mail.smtp.port", "465");
props.setProperty("mail.smtp.socketFactory.port", "465");
props.setProperty("mail.smtps.auth", "true");
/*
If set to fal...
Parsing JSON using Json.net
... @Marc Gravell: Thanks a lot! I knew nothing about JSon. But this example allowed me easily create configuration file (with hierarchical structure) for my application.
– Peter17
Apr 7 '11 at 15:17
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How can I add (simple) tracing in C#? [closed]
...roduce some tracing to a C# application I am writing. Sadly, I can never really remember how it works and would like a tutorial with reference qualities to check up on every now and then. It should include:
...
SQL to LINQ Tool [closed]
...elete this accepted answer. It used to be good, but now it isn't. Beware really old posts, guys. I'm removing the link.
[Linqer] is a SQL to LINQ converter tool. It helps you to learn LINQ and convert your existing SQL statements.
Not every SQL statement can be converted to LINQ, but Linqer covers m...