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What is the right way to check for a null string in Objective-C?
...ter equality. See Topics for Cocoa: Using Null.
So a good test might be:
if (title == (id)[NSNull null] || title.length == 0 ) title = @"Something";
Note how you can use the fact that even if title is nil, title.length will return 0/nil/false, ie 0 in this case, so you do not have to special cas...
How to configure socket connect timeout
...ll, null );
bool success = result.AsyncWaitHandle.WaitOne( 5000, true );
if ( socket.Connected )
{
socket.EndConnect( result );
}
else
{
// NOTE, MUST CLOSE THE SOCKET
socket.Close();
throw new ApplicationException("Failed to connect server.");
}
//...
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How to make a variadic macro (variable number of arguments)
...ant to write a macro in C that accepts any number of parameters, not a specific number
5 Answers
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How do I check if file exists in jQuery or pure JavaScript?
How do I check if a file on my server exists in jQuery or pure JavaScript?
17 Answers
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How to add folder to assembly search path at runtime in .NET?
...= Path.Combine(folderPath, new AssemblyName(args.Name).Name + ".dll");
if (!File.Exists(assemblyPath)) return null;
Assembly assembly = Assembly.LoadFrom(assemblyPath);
return assembly;
}
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Appending a line to a file only if it does not already exist
...
Beautiful solution. This also works for triggering more complicated expressions, of course. Mine uses the echo to trigger a cat of a multiline heredoc into a config file.
– Eric L.
Jun 15 '15...
Logic to test that 3 of 4 are True
I want to return True if and only if 3 out of 4 boolean values are true.
27 Answers
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How do I detect what .NET Framework versions and service packs are installed?
A similar question was asked here , but it was specific to .NET 3.5. Specifically, I'm looking for the following:
13 Answe...
vector vs. list in STL
...d of a sequence repeatedly.
Check out the complexity guarantees for each different type of container:
What are the complexity guarantees of the standard containers?
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Best practice to call ConfigureAwait for all server-side code
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Update: ASP.NET Core does not have a SynchronizationContext. If you are on ASP.NET Core, it does not matter whether you use ConfigureAwait(false) or not.
For ASP.NET "Full" or "Classic" or whatever, the rest of this answer still applies.
Original post (for non-Core ASP.NET):
This vi...