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How to create a generic array in Java?
...generic collection in Effective Java; Item 26. No type errors, no need to cast the array repeatedly. However this triggers a warning because it is potentially dangerous, and should be used with caution. As detailed in the comments, this Object[] is now masquerading as our E[] type, and can cause ...
Call an activity method from a fragment
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BE careful cause unexpected things happen if cast doesn't work.. :S
– Ewoks
Dec 14 '12 at 12:34
49
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How to return multiple objects from a Java method?
...pressWarnings("unchecked")
public static <P, Q> Pair<P, Q> cast(Pair<?, ?> pair, Class<P> pClass, Class<Q> qClass) {
if (pair.isInstance(pClass, qClass)) {
return (Pair<P, Q>) pair;
}
throw new ClassCastException();
}...
Compare DATETIME and DATE ignoring time portion
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Use the CAST to the new DATE data type in SQL Server 2008 to compare just the date portion:
IF CAST(DateField1 AS DATE) = CAST(DateField2 AS DATE)
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The cast to value type 'Int32' failed because the materialized value is null
...D == userID
select (int?)ch.Amount).Sum() ?? 0;
This first casts to int? to tell the C# compiler that this expression can indeed return null, even though Sum() returns an int. Then we use the normal ?? operator to handle the null case.
Based on this answer, I wrote a blog post with ...
How do I convert from int to Long in Java?
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Note that there is a difference between a cast to long and a cast to Long. If you cast to long (a primitive value) then it should be automatically boxed to a Long (the reference type that wraps it).
You could alternatively use new to create an instance of Long, init...
Why can I type alias functions and use them without casting?
...hat clarifies the type lark a little for someone else! And means much less casting than I at first thought :)
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Cast Int to enum in Java
What is the correct way to cast an Int to an enum in Java given the following enum?
17 Answers
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How to print VARCHAR(MAX) using Print Statement?
... worked.
DECLARE @info NVARCHAR(MAX)
--SET @info to something big
PRINT CAST(@info AS NTEXT)
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How do I perform an insert and return inserted identity with Dapper?
...gle<int>( @"
INSERT INTO [MyTable] ([Stuff]) VALUES (@Stuff);
SELECT CAST(SCOPE_IDENTITY() as int)", new { Stuff = mystuff});
Note that on more recent versions of SQL Server you can use the OUTPUT clause:
var id = connection.QuerySingle<int>( @"
INSERT INTO [MyTable] ([Stuff])
OUTPUT ...