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In MySQL, can I copy one row to insert into the same table?
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If it's null, it get automatically assigned the next AI number when it's inserted.
– Grim...
Dec 11 '13 at 11:08
3
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How can I reverse a NSArray in Objective-C?
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For obtaining a reversed copy of an array, look at danielpunkass' solution using reverseObjectEnumerator.
For reversing a mutable array, you can add the following category to your code:
@implementation NSMutableArray (Reverse)
- ...
Redefine tab as 4 spaces
...ated by pressing the tab key, which would result in the file literally containing (up to) 4 space characters for each "tab" you type?
Depending on your answer, one of the following sets of
settings should work for you:
For tab characters that appear 4-spaces-wide:
set tabstop=4
If you're using...
What does %~dp0 mean, and how does it work?
... - expands %I to a file extension only
%~sI - expanded path contains short names only
%~aI - expands %I to file attributes of file
%~tI - expands %I to date/time of file
%~zI - expands %I to size of file
%~$PATH:I - searches the directories listed in the PATH
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Hidden features of Python [closed]
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Chaining comparison operators:
>>> x = 5
>>> 1 < x < 10
True
>>> 10 < x < 20
False
>>> x < 10 < x*10 < 100
True
>>> 10 > x <= 9
True
>>> 5 == x ...
CruiseControl.Net 进行持续化集成 - IT产品资讯 - 清泛网 - 专注C/C++及内核技术
....2918，在首页的release栏中，便可以找到下载最新版CC.Net的连接，它是一款开源软件，你也可以在http://www.sf.net中找到它的源码和安装文件。如果你就是想使用CC.Net直接下载exe文件即可。下载后,在本地的安装过程如下：
双击Cru...
App Inventor 2开发简单计算器 - App Inventor 2 中文网 - 清泛IT论坛，有思想、有深度
...等号过程。图2-9 调用点击等号过程四、代码测试及说明连接手机进行测试，按照设定的规范操作计算器，计算结果正确。这里我们创建了3个过程——点击数字、点击算符及点击等号，这三个过程是本程序中仅有的三个过程，在...
Expanding tuples into arguments
...ted May 27 at 13:31
Nicolas Gervais
13.3k77 gold badges3434 silver badges5656 bronze badges
answered Jan 3 '10 at 2:24
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Can you control how an SVG's stroke-width is drawn?
...the inset and offset of a shape. It's not perfect (need to keep checking against latest browser versions) but it does accurately provide a shapes outer width for now.
– Steve
Sep 2 '11 at 10:02
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Which is fastest? SELECT SQL_CALC_FOUND_ROWS FROM `table`, or SELECT COUNT(*)
...nished my check on INNODB from 10 checks I can tell that it's 26(2query) against 9.2(1 query) SELECT SQL_CALC_FOUND_ROWS tblA.*, tblB.id AS 'b_id', tblB.city AS 'b_city', tblC.id AS 'c_id', tblC.type AS 'c_type', tblD.id AS 'd_id', tblD.extype AS 'd_extype',...