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Adding Core Data to existing iPhone project
...ok for some file like App_Prefix.pch, by default it's in the Other Sources group. After the UIKit import statement, add the following line:
#import <CoreData/CoreData.h>
And you should be ready to go.
Xcode 4
For projects created in Xcode 4, the prefix file can be found in the Supporting ...
typeof for RegExp
...rray] check doesn't work for arrays. See jsfiddle.net/F6d8u for a demo and groups.google.com/group/comp.lang.javascript/browse_frm/thread/… for a discussion of this.
– Tim Down
Dec 3 '10 at 13:28
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How to scroll to top of long ScrollView layout?
...part of my app, the user is presented with a list of names and is asked to group them as they see fit.
15 Answers
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Decimal number regular expression, where digit after decimal is optional
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@EqualityInTech I'm pretty sure it's not - it has no grouping at all.
– OrangeDog
May 17 '18 at 15:45
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关于美团大众点评的新名字的哥德巴赫猜想 - 资讯 - 清泛网 - 专注C/C++及内核技术
...众点评合并新公司英文名字已经注册为“China Internet Plus Group”，直翻成中文就是“中国互联网+”。真是吓死宝宝了……如果是A股上市公司，这不得来个七八个涨停？
如果传言属实的话，美团和大众点评合并后新公司的野心可...
How to find the mysql data directory from command line in windows
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| innodb_data_home_dir | |
| innodb_log_group_home_dir | ./ |
| lc_messages_dir | /usr/share/mysql/ |
| plugin_dir | /usr/lib/mysql/plugin/ |
| slave_load_tmpdir | /tmp |
| ...
How do I use ROW_NUMBER()?
...ry simple implementations of row_number(). You can use it for more complex grouping. Check out my response on Advanced grouping without using a sub query
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What does it mean by select 1 from table?
...lthough it is not widely known, a query can have a HAVING clause without a GROUP BY clause.
In such circumstances, the HAVING clause is applied to the entire set. Clearly, the SELECT clause cannot refer to any column, otherwise you would (correct) get the error, "Column is invalid in select becaus...
All Ruby tests raising: undefined method `authenticate' for nil:NilClass
... request. This thread provides some background on issues with it:
http://groups.google.com/group/plataformatec-devise/browse_thread/thread/f7260ebe2d9f7316?fwc=1
Essentially, the authenticate_user! function is part of Rails 3 (using the new devise feature, of which I know little about). If the a...
Counting null and non-null values in a single query
... Using the distinction between count(*) and count(a) also works well with group by
– shannon
Mar 4 '15 at 7:36
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