大约有 42,000 项符合查询结果（耗时：0.0459秒） [XML]
C# Iterating through an enum? (Indexing a System.Array)
...rmat("{0}: {1}", Enum.GetName(typeof(MyEnum), val), val));
}
Or, you can cast the System.Array that is returned:
string[] names = Enum.GetNames(typeof(MyEnum));
MyEnum[] values = (MyEnum[])Enum.GetValues(typeof(MyEnum));
for( int i = 0; i < names.Length; i++ )
{
print(names[i], values[i])...
How do the PHP equality (== double equals) and identity (=== triple equals) comparison operators dif
...
@Pim ...continued: Look at it this way: Casting to a BOOL, any value only has to fall on one of two sides, true or false. That's easy to cast. All other values though have, for all practical purposes, virtually unlimited combinations. Is "five" == 5? array(0) == 0?...
The property 'value' does not exist on value of type 'HTMLElement'
...InputElement does however contain the value property.
So a solution is to cast the result of getElementById() to HTMLInputElement like this:
var inputValue = (<HTMLInputElement>document.getElementById(elementId)).value;
<> is the casting operator in typescript. See the question TypeS...
How to do a case sensitive search in WHERE clause (I'm using SQL Server)?
...
By using collation or casting to binary, like this:
SELECT *
FROM Users
WHERE
Username = @Username COLLATE SQL_Latin1_General_CP1_CS_AS
AND Password = @Password COLLATE SQL_Latin1_General_CP1_CS_AS
AND Username = @Username
AND...
alternatives to REPLACE on a text or ntext datatype
...SQL Server 2000:
UPDATE [CMS_DB_test].[dbo].[cms_HtmlText]
SET Content = CAST(REPLACE(CAST(Content as NVarchar(4000)),'ABC','DEF') AS NText)
WHERE Content LIKE '%ABC%'
For SQL Server 2005+:
UPDATE [CMS_DB_test].[dbo].[cms_HtmlText]
SET Content = CAST(REPLACE(CAST(Content as NVarchar(MAX)),'AB...
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
...
BE careful cause unexpected things happen if cast doesn't work.. :S
– Ewoks
Dec 14 '12 at 12:34
49
...
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
...
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)
share
...
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 ...