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c# Programming Glossary: constantConditional operator cannot cast implicitly? http://stackoverflow.com/questions/2215745/conditional-operator-cannot-cast-implicitly type of the conditional expression is int and it is not a constant unless the condition expression is constant true or constant.. it is not a constant unless the condition expression is constant true or constant false . Since it is not a constant you can't.. unless the condition expression is constant true or constant false . Since it is not a constant you can't assign it to byte..
Is there any significant difference between using if/else and switch-case in C#? http://stackoverflow.com/questions/395618/is-there-any-significant-difference-between-using-if-else-and-switch-case-in-c many other languages also allows to switch on string constants and this works a bit differently. It's obviously not practical.. will create a HashTable object populate it with string constants and make a lookup on that table followed by jump. Hashtable.. Hashtable lookup is not strictly O 1 and has noticeable constant costs but if number of case labels is large it will be significantly..
Performance differences between debug and release builds http://stackoverflow.com/questions/4043821/performance-differences-between-debug-and-release-builds you don't change it manually is that Debug have the DEBUG constant defined and Release have the Optimize code checked of. So my.. ... gets completely eliminated. This can occur due to constant folding and inlining. Other cases is where the JIT compiler..
C# switch statement limitations - why? http://stackoverflow.com/questions/44905/c-sharp-switch-statement-limitations-why type expected' and the case statements fail with 'A constant value is expected'. I would like to know why these restrictions.. and evaluated statically. The switch statement does a constant time branch regardless of how many cases you have. The if else.. is true. In fact the C# switch statement is not always a constant time branch. In some cases the compiler will use a CIL switch..
What is the difference between const and readonly? http://stackoverflow.com/questions/55984/what-is-the-difference-between-const-and-readonly readonly and do you use one over the other c# .net const constants readonly share improve this question Apart from the apparent.. recompiled. So if you are confident that the value of the constant won't change use a const. public const int CM_IN_A_METER 100.. public const int CM_IN_A_METER 100 But if you have a constant that may change e.g. w.r.t. precision .. or when in doubt use..
http://stackoverflow.com/questions/755685/c-static-readonly-vs-const readonly fields. We have some classes which contains only constant values. Used for various things around in our system. So I am.. if my observation is correct Should these kind of constant values always be static readonly for everything that is public.. static readonly fields but rather use properties maybe c# constants share improve this question Public static readonly fields..
What does the [Flags] Enum Attribute mean in C#? http://stackoverflow.com/questions/8447/what-does-the-flags-enum-attribute-mean-in-c None 0 .... Use None as the name of the flag enumerated constant whose value is zero. You cannot use the None enumerated constant.. whose value is zero. You cannot use the None enumerated constant in a bitwise AND operation to test for a flag because the result.. between the numeric value and the None enumerated constant to determine whether any bits in the numeric value are set...
http://stackoverflow.com/questions/1117542/spaces-in-c-sharp-enums can do it in VB by doing this Public Enum EnumWithSpaces ConstantWithoutSpaces Constant With Spaces End Enum ...and then access.. this Public Enum EnumWithSpaces ConstantWithoutSpaces Constant With Spaces End Enum ...and then access it like this Public.. Dim foo As EnumWithSpaces EnumWithSpaces. Constant With Spaces End Sub That implies to me that the CLR can handle..
Order of items in classes: Fields, Properties, Constructors, Methods [closed] http://stackoverflow.com/questions/150479/order-of-items-in-classes-fields-properties-constructors-methods Within a class struct or interface SA1201 and SA1203 Constant Fields Fields Constructors Finalizers Destructors Delegates..
How do I send/receive windows messages between VB6 and c#? http://stackoverflow.com/questions/1645204/how-do-i-send-receive-windows-messages-between-vb6-and-c identifier that will be interference free. GWL_WNDPROC Constant that is used for SetWindowLong to request modification to the..
Access the value of a member expression http://stackoverflow.com/questions/2616638/access-the-value-of-a-member-expression a MemberExpression back for the p.Price which contains a Constant Expression however I can't seem to get the value 30 back from.. seem to work. var memberExpression MemberExpression GetRootConstantExpression m var fi PropertyInfo memberExpression.Member var.. PropertyInfo memberExpression.Member var val fi.GetValue ConstantExpression memberExpression.Expression .Value null Cheers. c#..
Best way to handle Integer overflow in C#? http://stackoverflow.com/questions/2954970/best-way-to-handle-integer-overflow-in-c on whether the expression is constant or non constant. Constant expressions cause compile time errors while non constant expressions..
Are global static classes and methods bad? http://stackoverflow.com/questions/3151768/are-global-static-classes-and-methods-bad Let me clarify a bit more some issues with Global Data. Constant or read only global data isn't nearly as big of an issue as..
What does Expression.Quote() do that Expression.Constant() can?™t already do? http://stackoverflow.com/questions/3716492/what-does-expression-quote-do-that-expression-constant-cant-already-do does Expression.Quote do that Expression.Constant can ™t already do Note I am aware of the earlier question a.. stated purpose of Expression.Quote is. However Expression.Constant can be used for the same purpose in addition to all the purposes.. purpose in addition to all the purposes that Expression.Constant is already used for . Therefore I don ™t understand why Expression.Quote..
Performance differences between debug and release builds http://stackoverflow.com/questions/4043821/performance-differences-between-debug-and-release-builds Common sub expression elimination. x y 4 z y 4 becomes z x Constant folding. x 1 2 becomes x 3 This simple example is caught early..
Why can't structs be declared as const? [duplicate] http://stackoverflow.com/questions/4590796/why-cant-structs-be-declared-as-const for example switch logic based on the time of day. Constant value types makes sense intellectually but it simply cannot..
Writing musical notes to a wav file http://stackoverflow.com/questions/4974531/writing-musical-notes-to-a-wav-file data new byte channels bitsPerSample 8 samples Creates a Constant Sound for int i 0 i data.Length i data i byte 256 Math.Sin i..
http://stackoverflow.com/questions/5968708/why-array-implements-ilist ICollection T Readonly with indexer indexer indexof ... Constant size with indexer indexer with a setter Variable size with indexer..
Left bit shifting 255 (as a byte) http://stackoverflow.com/questions/737781/left-bit-shifting-255-as-a-byte why the following doesn't compile byte b 255 1 The error Constant value '510' cannot be converted to a 'byte' I'm expecting the..
Expression.Lambda and query generation at runtime, simplest “Where” example http://stackoverflow.com/questions/8315819/expression-lambda-and-query-generation-at-runtime-simplest-where-example then Soap in '... item.Name Soap ' var value Expression.Constant Soap equality expression in my primer var equals Expression.Equal.. like this Lambda Equal Parameter item Property Name Constant Soap Parameter item In code var item Expression.Parameter.. var prop Expression.Property item Name var soap Expression.Constant Soap var equal Expression.Equal prop soap var lambda Expression.Lambda..
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