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Function pointers, Closures, and Lambda
...ure) encapsulates both the function pointer and variables. This is why, in C#, you can do:
int lessThan = 100;
Func<int, bool> lessThanTest = delegate(int i) {
return i < lessThan;
};
I used an anonymous delegate there as a closure (it's syntax is a little clearer and closer to C than...
The quest for the Excel custom function tooltip
...-bit Excel 2010 on Windows Server 2008) and had a serious problems.
For a C# function defined with the Excel-DNA attributes like this:
[ExcelFunction(Description =
"A useful test function that adds two numbers, and returns the sum.")]
public static double AddThem(
[ExcelArgument(Name = "A...
What is Castle Windsor, and why should I care?
...arly COM. I've been working with .NET since 2001, so I'm pretty fluent in C# and the CLR. I'd never heard of Castle Windsor until I started participating in Stack Overflow. I've read the Castle Windsor "Getting Started" guide, but it's not clicking.
...
Cannot use ref or out parameter in lambda expressions
...
As this is one of the top results for "C# lambda ref" on Google; I feel I need to expand on the above answers. The older (C# 2.0) anonymous delegate syntax works and it does support more complex signatures (as well closures). Lambda's and anonymous delegates at th...
How do I make calls to a REST api using C#?
...ne of the top results when doing a Google search for "call restful service c#".
Current guidance from Microsoft is to use the Microsoft ASP.NET Web API Client Libraries to consume a RESTful service. This is available as a NuGet package, Microsoft.AspNet.WebApi.Client. You will need to add this NuGe...
What's the cause of this FatalExecutionEngineError in .NET 4.5 beta? [closed]
...ination of a bug in the JIT type-initialization logic, and a change in the C# compiler that relies on the assumption that the JIT works as intended. I think the JIT bug existed in .NET 4.0, but was uncovered by the change in the compiler for .NET 4.5.
I do not think that beforefieldinit is the onl...
Maximum Length of Command Line String
...'t the full answer). I've done some experiments (using ProcessStartInfo in c#) and it seems that the 'arguments' string for a commandline command is limited to 2048 characters in XP and 32768 characters in Win7. I'm not sure what the 8191 limit refers to, but I haven't found any evidence of it yet.
...
How do I provide custom cast support for my class?
...that rather than overloading the cast operator.
See explicit and implicit c# but note that from that example, using the explicit method, if you do:
string name = "Test";
Role role = (Role) name;
Then everything is fine; however, if you use:
object name = "Test";
Role role = (Role) name;
You w...
catch exception that is thrown in different thread
...ltithreading, however, I preferred to read about this in the O'Reilly book C# 3.0 in a nutshell, by the brothers Albahari (2007), which is also freely accessible on Google Books, just like the newer version of the book, because it also covers thread pooling, foreground versus background threads, etc...
What is the purpose of the “Prefer 32-bit” setting in Visual Studio and how does it actually work?
...s the new default (overall, there
are now five options for the /platform C# compiler switch: x86,
Itanium, x64, anycpu, and anycpu32bitpreferred). When using the "Prefer 32-Bit"
flavor of AnyCPU, the semantics are as follows:
If the process runs on a 32-bit Windows system, it runs as a...