You should initialize most fields normally, not
lazily. If you must initialize a field lazily in order to achieve your
performance goals, or to break ...
分类:
编程语言 时间:
2014-05-09 18:32:56
阅读次数:
497
SELECT * FROM (SELECT * FROM calenderDetail A ORDER
BY a. calender desc ) WHERE rownum <3
;//计算时间大于当前时间的最近2条记录取当前小时,以及相隔一小时v_begin_date:=to_date(to_ch...
分类:
数据库 时间:
2014-05-09 17:03:41
阅读次数:
620
/*按照符号分割字符串*/create function [dbo].[m_split](@c
varchar(2000),@split varchar(2)) returns @t table(col varchar(200)) as begin
wh...
分类:
数据库 时间:
2014-05-09 12:18:45
阅读次数:
376
BOOLEAN MmIsAddressValid( _In_PVOID
VirtualAddress);ParametersVirtualAddress[in]A pointer to the nonpaged virtual
address to check. The caller must e....
分类:
其他好文 时间:
2014-05-09 11:51:40
阅读次数:
535
官方代码发短息和邮件添加MessageUI.framework 库发送信息-
(IBAction)showSMSPicker:(id)sender{ // You must check that the current device
can send SMS messages before you ...
分类:
移动开发 时间:
2014-05-08 20:26:04
阅读次数:
500
返回数据格式:{"total":7,"rows":[ {"id":1,"name":"All
Tasks","begin":"3/4/2010","end":"3/20/2010","progress":60,"iconCls":"icon-ok"}, {"id":2,"name":"Designi...
分类:
其他好文 时间:
2014-05-05 11:02:30
阅读次数:
355
$\bf命题1:$$n$阶实对称阵$A$的第一行乘以一个正数不改变其正特征值的个数证明:设$B
= diag\left( {k,{E_{n - 1}}} \right)A$,其中$k >
0$,则\[\begin{array}{l}diag\left( {\frac{1}{{\sqrt k }},{...
分类:
其他好文 时间:
2014-05-04 20:01:17
阅读次数:
1494
$\bf命题2:$任意方阵$A$均可分解为可逆阵$B$与对称阵$C$之积证明:设$r\left( A \right) =
r$,则存在可逆阵$P,Q$,使得\[A = P\left(
{\begin{array}{*{20}{c}}{{E_r}}&0\\0&0\end{array}} \right)...
分类:
其他好文 时间:
2014-05-04 19:47:13
阅读次数:
587
$\bf命题1:$设$\int_a^{ + \infty } {f\left( x
\right)dx} $收敛,若$\lim \limits_{x \to \begin{array}{*{20}{c}} {{\rm{ + }}\infty }
\end{array}} f\left( x \rig...
分类:
其他好文 时间:
2014-05-04 19:22:03
阅读次数:
1000
中文版显示:Firefox 已经在运行,但是没有响应。如要打开新窗口,您必须先关闭该 Firefox 进程,或者重新启动您的系统。
英文版显示:Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or ...
分类:
系统相关 时间:
2014-05-04 17:44:21
阅读次数:
647