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Linq Query keeps throwing “Unable to create a constant value of type System.Object…”, Why?
...this is in the context of an IQueryable, so it's not compiled into regular C# code. It becomes an expression that is passed to a query provider. That query provider can do whatever wants with the query, and it may handle Equals and == the same or not.
– Servy
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How to use LINQ to select object with minimum or maximum property value
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So you are asking for ArgMin or ArgMax. C# doesn't have a built-in API for those.
I've been looking for a clean and efficient (O(n) in time) way to do this. And I think I found one:
The general form of this pattern is:
var min = data.Select(x => (key(x), x)).Min...
Why does ReSharper tell me “implicitly captured closure”?
...l memory leak, and that is the reason for the R# warning.
@splintor
As in C# the anonymous methods are always stored in one class per method there are two ways to avoid this:
Use an instance method instead of an anonymous one.
Split the creation of the lambda expressions into two methods.
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Unit test naming best practices [closed]
...t fixture after the unit under test (i.e. the class).
To illustrate (using C# and NUnit):
[TestFixture]
public class BankAccountTests
{
[Test]
public void Should_Increase_Balance_When_Deposit_Is_Made()
{
var bankAccount = new BankAccount();
bankAccount.Deposit(100);
Assert.That(...
What is the correct way to create a single-instance WPF application?
Using C# and WPF under .NET (rather than Windows Forms or console), what is the correct way to create an application that can only be run as a single instance?
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How to drive C#, C++ or Java compiler to compute 1+2+3+…+1000 at compile time?
...ics and pre-processor features of the compiler. It is possible to use C++, C# or Java compiler. Any ideas???
13 Answers
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How to convert byte array to string [duplicate]
... This only works if your string was encoded with UTF16 which is c# string's default internal encoding scheme. If, say, the byte array was encoded simply with ASCII chars from the original string (assuming it can be), after the BlockCopy, each char will be squeezed with two such ASCII char...
Why isn't String.Empty a constant?
...tatic members (not instance members).
Check section 10.4 Constants of the C# language specification.
Even though constants are considered
static members, a constant-declaration
neither requires nor allows a static
modifier.
If public const members are static, one could not consider that...
各编程语言读写文件汇总 - C/C++ - 清泛网 - 专注C/C++及内核技术
...即文件原先的内容会被保留。
导航：
一、PHP
二、C#
三、C
3.1、fgets、fputs文本读写
3.2、fread、fwrite二进制读写
四、C++
五、Java
PHP读写文件：
// 写文件
$fp = fopen("log.txt", "a");
fwrite($fp, $str);
fclose($fp);
// ...
How can I decode HTML characters in C#?
... It's supposed to be in System.Web, but it isn't. I haven't touched C# for more that a year, if I get a bit more frustrated with this I'll convert them manually.
– Vasil
Sep 23 '08 at 18:10
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