大约有 2,253 项符合查询结果(耗时:0.0242秒) [XML]

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Difference between new and override

...y. When you hide a method, you can still access the original method by up casting to the base class. This is useful in some scenarios, but dangerous. share | improve this answer | ...
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Polymorphism: Why use “List list = new ArrayList” instead of “ArrayList list = new ArrayList”? [dupl

... Whose methods are available by this casting? list or arraylist? – Zahan Safallwa Feb 27 '16 at 13:58 1 ...
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How do I convert uint to int in C#?

...int is greater than int.MaxValue you'll get a negative result if you use a cast, or an exception if you use Convert.ToInt32. – LukeH Jul 15 '09 at 14:52 4 ...
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Rounding a double to turn it into an int (java)

...d, it returns a Long when the input param is Double. So, you will have to cast the return value: int a = (int) Math.round(doubleVar); share | improve this answer | follow ...
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What is the concept of erasure in generics in Java?

...ain just talks in terms of java.lang.Object - the compiler generates extra casts where necessary. At execution time, a List<String> and a List<Date> are exactly the same; the extra type information has been erased by the compiler. Compare this with, say, C#, where the information is re...
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How to convert float to varchar in SQL Server

...0387597207 select @test set @test1 = convert (decimal(10,5), @test) select cast((@test1) as varchar(12)) Select LEFT(cast((@test1) as varchar(12)),LEN(cast((@test1) as varchar(12)))-1) share | i...
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Where is C not a subset of C++? [closed]

... C++ should require an explicit cast to int*. – Mehrdad Afshari Jul 29 '09 at 16:51 8 ...
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MySQL “between” clause not inclusive?

...ly has a time component. To truncate it out: select * from person where CAST(dob AS DATE) between '2011-01-01' and '2011-01-31' share | improve this answer | follow ...
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Select values from XML field in SQL Server 2008

... INSERT INTO dbo.DeleteBatch ( ExecutionKey, SourceKeys ) SELECT 1, (CAST('<k>1</k><k>2</k><k>3</k>' AS XML)) INSERT INTO dbo.DeleteBatch ( ExecutionKey, SourceKeys ) SELECT 2, (CAST('<k>100</k><k>101</k>' AS XML)) Here's my S...
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C# HttpWebRequest vs WebRequest

... HttpWebRequest.Create or something like HttpWebRequest.CreateHttp without casting. The first would be something like public new static HttpWebRequest Create(string url). Either way, if the url wasn't HTTP(s), it should just throw some InvalidArgumentException. – Matthew Flas...