equality

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myVariable(int) == 0 same as myVariable(Guid) == Guid.Empty

I recently converted a bunch of tables PK\'s from int to uniqueidentifier.Now in my code I am replacing certain checks like so:[详细]

2023-01-23 04:34 分类：问答
Equals() contract for .NET Dictionary / IDictionary vs equals() contract for Java Map

Nostalgic for Collections.unmodifiableMap(), I\'ve been implementing a read-only IDictionary wrapper based on this discussion, and my unit test quickly ran into a problem:[详细]

2023-01-20 10:36 分类：问答
Requirements for entities in NHibernate to be used in a HashedSet

I would like to use the Iesi.Collections HashedSet class for entity collections in NHibernate. The functionality I want is that duplicate entities cannot be added. I would like entities to be consider[详细]

2023-01-19 19:54 分类：问答
Checking for equality in lists in SML

i want to write a function that checks for equality of lists in SML for instance : [1,2,3]=[1,2,3]; val it = true : bool[详细]

2023-01-18 13:49 分类：问答
Ruby Set class: equality of sets

According to the Ruby Set class\'s documentation, \"== Returns true if two sets are equal. The equality of each couple of elements is defined according to Object#eql?.[详细]

2023-01-18 01:40 分类：问答
Testing for equality between dictionaries in C#

Assuming dictionary keys and values have their equals and hash methods implemented correctly, what is the most succinct and efficient way to test for equality of two dictionaries?[详细]

2023-01-17 23:27 分类：问答
checking two object instances to see if they are the same

i need to compare two objects but compare a number of their properties in one hit. this is not for sorting, but instead to confirm whether anything has changed; as one is the old saved instance, and t[详细]

2023-01-17 12:18 分类：问答
isEqual doesn't always work for NSIndexPath? What can I use in its place?

I\'ve got some code that relies on comparing two NSIndexPaths and executing different code based on their equality or lack thereof (using -isEqual). Most of the time it works properly, but sometimes i[详细]

2023-01-17 07:24 分类：问答
Should you use 'isEqual' or '=='?

I saw a couple of questions here on SO, with ansers including the function isEqual: instead of the standard ==.[详细]

2023-01-16 21:25 分类：问答
Does Java guarantee that Object.getClass() == Object.getClass()?

I really do mean identity-equality开发者_StackOverflow中文版 here. For example, will the following always print true?[详细]

2023-01-16 20:35 分类：问答