c# Programming Glossary: object.equals

When do we do GetHashCode() for a Dictionary?

http://stackoverflow.com/questions/1407380/when-do-we-do-gethashcode-for-a-dictionary

override Equals and GetHashCode whenever the default Object.Equals tests for reference equality will not suffice. This happens..

Should IEquatable<T>, IComparable<T> be implemented on non-sealed classes?

http://stackoverflow.com/questions/1868316/should-iequatablet-icomparablet-be-implemented-on-non-sealed-classes

fields whose T is sealed and instead to use the virtual Object.Equals Object obj if T is unsealed even if T implements IEquatable.. T on a given object should have the same behavior as Object.Equals assuming the comparer is of the equivalent type. Implementing.. to contrive any number of scenarios where IEquatable T and Object.Equals would differ since there are multiple IEquatable T implementations..

What's the difference between IEquatable and just overriding Object.Equals()?

http://stackoverflow.com/questions/2734914/whats-the-difference-between-iequatable-and-just-overriding-object-equals

the difference between IEquatable and just overriding Object.Equals I want my Food class to be able to test whenever it is equal.. method. Should I implement IEquatable or just override Object.Equals From MSDN This method determines equality by using the default.. which functions classes of the .NET framework make use of Object.Equals Should I use it in the first place Thanks c# .net equals equality..

c# compare two generic values [duplicate]

http://stackoverflow.com/questions/488250/c-sharp-compare-two-generic-values

Preferring EqualityComparer<T> to IEqualityComparer<T>

http://stackoverflow.com/questions/5707347/preferring-equalitycomparert-to-iequalitycomparert

using the IEquatable T .Equals method instead of the Object.Equals method. ... I don't understand the quote's argument of why we.. IEqualityComparer T will test for equality using Object.Equals but isn't the whole point of implementing IEqualityComparer.. T when we don't want to test for equality using Object.Equals or IEquatable T .Equals It also implies that if we derive from..

Why must we define both == and != in C#?

http://stackoverflow.com/questions/6916884/why-must-we-define-both-and-in-c

contrast to design choices for .NET interfaces like Object.Equals IEquatable.Equals IEqualityComparer.Equals where the lack of..

Comparing Arrays in C#

http://stackoverflow.com/questions/713341/comparing-arrays-in-c-sharp

requires '1' type arguments for int i 0 i a1.Length i if Object.Equals list1 i list2 i error CS0021 Cannot apply indexing with to an..

Overriding GetHashCode for mutable objects? [C#]

http://stackoverflow.com/questions/873654/overriding-gethashcode-for-mutable-objects-c

Even without IEquatable T most will default to calling Object.Equals which will then go into your implementation. Basically in most..

List<T> operator == In the C# Language Specification Version 4

http://stackoverflow.com/questions/11852596/listt-operator-in-the-c-sharp-language-specification-version-4

a.count b.count return false for int i 0 i a.count i if object.Equals a.items i b.items i return false return true share improve..

Why C# fails to compare two object types with each other but VB doesn't?

http://stackoverflow.com/questions/14837209/why-c-sharp-fails-to-compare-two-object-types-with-each-other-but-vb-doesnt

whole lot more work it's not even just equivalent to using object.Equals x y as things like Option Compare can affect how text is compared...

Single-assembly multi-language Windows Forms deployment (ILMerge and satellite assemblies / localization) - possible?

http://stackoverflow.com/questions/1952638/single-assembly-multi-language-windows-forms-deployment-ilmerge-and-satellite-a

ResourceSet localResourceSets culture if objA null if object.Equals objA rs rs.Dispose rs objA else localResourceSets.Add..

Linq where column == (null reference) not the same as column == null

http://stackoverflow.com/questions/2097539/linq-where-column-null-reference-not-the-same-as-column-null

it looks like the following would do what you want where object.Equals s.crmc_Retail_Trade_Id tradeId The Null Semantics LINQ to SQL..

When To Use IEquatable And Why

http://stackoverflow.com/questions/2476793/when-to-use-iequatable-and-why

and as a result will be slightly faster than the standard object.Equals method that would be used otherwise. As an example see the different..

C# Object Pooling Pattern implementation

http://stackoverflow.com/questions/2510975/c-sharp-object-pooling-pattern-implementation

slots. public void Store T item Slot slot slots.Find s object.Equals s.Item item if slot null slot new Slot item slots.Add slot..

Lambdas and the ternary operator, weird issue

http://stackoverflow.com/questions/263151/lambdas-and-the-ternary-operator-weird-issue

that when comparing an int value against null you just use object.Equals c# lambda ternary operator share improve this question ..

Are string.Equals() and == operator really same? [duplicate]

http://stackoverflow.com/questions/3678792/are-string-equals-and-operator-really-same

Note that you can avoid the latter being a problem using object.Equals if object.Equals x y Fine even if x or y is null share improve..

c# compare two generic values [duplicate]

http://stackoverflow.com/questions/488250/c-sharp-compare-two-generic-values

for without also either implement IEquatable T overrides object.Equals In general implementing the operator and not also doing at least..

MSTest: CollectionAssert.AreEquivalent failed. The expected collection contains 1 occurrence(s) of

http://stackoverflow.com/questions/5194966/mstest-collectionassert-areequivalent-failed-the-expected-collection-contains

the two MyPerson objects will be compared with object.Equals just like any other object. Since the objects are different..

Finding common columns from two datatable and using those for Join condition in LINQ

http://stackoverflow.com/questions/5259711/finding-common-columns-from-two-datatable-and-using-those-for-join-condition-in

Equals object x object y for var i 0 i x.Length i if object.Equals x i y i return false return true public int GetHashCode object..

In WPF can you filter a CollectionViewSource without code behind?

http://stackoverflow.com/questions/6461826/in-wpf-can-you-filter-a-collectionviewsource-without-code-behind

.GetValue item null if RegexPattern null return object.Equals itemValue Value else if itemValue is string false throw..

Null or default comparison of generic argument in C#

http://stackoverflow.com/questions/65351/null-or-default-comparison-of-generic-argument-in-c-sharp

generics share improve this question How about this if object.Equals myArgument default T ... Using the static object.Equals method.. if object.Equals myArgument default T ... Using the static object.Equals method avoids the need for you to do the null check yourself...

How do I compare a generic type to its default value? [duplicate]

http://stackoverflow.com/questions/864243/how-do-i-compare-a-generic-type-to-its-default-value

Difference between == operator and Equals() method in C#?

http://stackoverflow.com/questions/9529422/difference-between-operator-and-equals-method-in-c

identity comparison prints False Compare that with object.Equals object which is a virtual method. As it happens String overloads.. both method calls in the compiled code will simply be to object.Equals object but they'll still both print True because of polymorphism..

Loop Through An Objects Properties In C#

http://stackoverflow.com/questions/957783/loop-through-an-objects-properties-in-c-sharp

object secondValue propertyInfo.GetValue second null if object.Equals firstValue secondValue return false return true share..