大约有 43,000 项符合查询结果（耗时：0.0514秒） [XML]
Assign null to a SqlParameter
...value or a DBNull type value, which are not compatible.
You can of course cast the instance of AgeIndex to be type object which would satisfy the ?: requirement.
You can use the ?? null-coalescing operator as follows
SqlParameter[] parameters = new SqlParameter[1];
SqlParameter planIndexPara...
Easiest way to convert int to string in C++
...
@Flying: under VS2010 you have to explicitly cast the converting integer to one of the following types [_Longlong, _ULonglong, long double]; i.e: string s = to_string((_ULonglong)i);
– Zac
Dec 6 '13 at 14:50
...
SQL Server 2008: How to query all databases sizes?
... it works for me:
SELECT
DB_NAME(db.database_id) DatabaseName,
(CAST(mfrows.RowSize AS FLOAT)*8)/1024 RowSizeMB,
(CAST(mflog.LogSize AS FLOAT)*8)/1024 LogSizeMB,
(CAST(mfstream.StreamSize AS FLOAT)*8)/1024 StreamSizeMB,
(CAST(mftext.TextIndexSize AS FLOAT)*8)/1024 TextIndexSiz...
Cast Double to Integer in Java
Any way to cast java.lang.Double to java.lang.Integer ?
17 Answers
17
...
Socket 错误返回码详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
Socket 错误返回码详解Socket error 0 - Directly send errorSocket error 10004 - Interrupted function callSocket error 10013 - Permission...Socket error 0 - Directly send error
Socket error 10004 - Interrupted function call
Socket error 10013 - Permission denied
Socket error 10014 - Bad ad...
MySQL selecting yesterday's date
...
You can get yesterday's date by using the expression CAST(NOW() - INTERVAL 1 DAY AS DATE). So something like this might work:
SELECT * FROM your_table
WHERE DateVisited >= UNIX_TIMESTAMP(CAST(NOW() - INTERVAL 1 DAY AS DATE))
AND DateVisited <= UNIX_TIMESTAMP(CAST(NOW...
Getting the max value of an enum
... Bang = 2
}
// this gets Fizz
var lastFoo = Enum.GetValues(typeof(Foo)).Cast<Foo>().Last();
Edit
For those not willing to read through the comments: You can also do it this way:
var lastFoo = Enum.GetValues(typeof(Foo)).Cast<Foo>().Max();
... which will work when some of your en...
uint8_t can't be printed with cout
...
Since C style casts are frowned upon, wouldn't it be better to do a static_cast?
– Tim Seguine
Oct 24 '13 at 12:09
37
...
ARC and bridged cast
With ARC, I can no longer cast CGColorRef to id . I learned that I need to do a bridged cast. According clang docs :
3 ...
清泛IT论坛广告位招租 - 免费信息发布 - 清泛IT社区，为创新赋能！
为了推动清泛网的不断发展，为IT人提供更多优质内容及解决方案，现对外广告招商，广告虚位多多，欢迎合作。
具体请垂询：
邮箱：service@tsingfun.com
电话：18721201607
QQ：348366338