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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 ...
Simple Digit Recognition OCR in OpenCV-Python
... a well defined perfect font. For instance, the digits 0, 4, 6, 9 form one group, the digits 1, 2, 3, 5, 7 form another, and 8 another. This group is given by the euler number. Then "0" has no endpoints, "4" has two, and "6" and "9" are distinguished by centroid position. "3" is the only one, in the...
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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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...
解决：ORA-01658: 无法为表空间space中的段创建 INITIAL 区 - 数据库(内核)...
...小SQL：select tablespace_name,sum(bytes)/1024/1024 from dba_data_files group by tablespace_name;
2、查看表空间已使用大小及分配情况：
select SEGMENT_TYPE,owner,sum(bytes)/1024/1024 from dba_segments where tablespace_name='TB_SPACE_NAME' group by segment_type,owner
3、准备...