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Get to UIViewController from UIView?
...ace in a way with the view controller, the recommended way, and what Apple does across Cocoa is to use the delegate pattern.
An example of how to implement it follows:
@protocol MyViewDelegate < NSObject >
- (void)viewActionHappened;
@end
@interface MyView : UIView
@property (nonatomic,...
T-SQL: Using a CASE in an UPDATE statement to update certain columns depending on a condition
...n to change the structure of your query, just the data involved. You could do this:
update table set
columnx = (case when condition then 25 else columnx end),
columny = (case when condition then columny else 25 end)
This is semantically the same, but just bear in mind that both columns wi...
How to position text over an image in css
How do I center a text over an image in css?
7 Answers
7
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How to do SELECT COUNT(*) GROUP BY and ORDER BY in Django?
...
According to the documentation, you should use:
from django.db.models import Count
Transaction.objects.all().values('actor').annotate(total=Count('actor')).order_by('total')
values() : specifies which columns are going to be used to "group b...
Convert char to int in C#
...
Interesting answers but the docs say differently:
Use the GetNumericValue methods to
convert a Char object that represents
a number to a numeric value type. Use
Parse and TryParse to convert a
character in a string into a Char
object. Use ...
Grep and Sed Equivalent for XML Command Line Processing
When doing shell scripting, typically data will be in files of single line records like csv. It's really simple to handle this data with grep and sed . But I have to deal with XML often, so I'd really like a way to script access to that XML data via the command line. What are the best tools?
...
How do I enable TODO/FIXME/XXX task tags in Eclipse?
In all my years of using Eclipse, I never knew until now that TODO / FIXME / XXX comment tags are supposed to appear in the task list. Apparently this is something that is disabled by default because I have been using those tags for as long as I've been using Eclipse and I have never seen one of the...
Reintegrate can only be used if revisions X through Y were previously merged from to reintegra
... on Google but they made me nervous as 'hacks'. To address it I decided to do just what subversion is hinting at in the message. I went back to my branch and explicitly merged the specified revisions:
$ svn merge -r 650:693 https://server.blah/source/orb/trunk
$ svn commit -m 'merged revisions 650:...
How to link C++ program with Boost using CMake
...ong with other find-scripts for common libraries. You could just check the documentation in that file for more information about how it works.
An example out of my head:
FIND_PACKAGE( Boost 1.40 COMPONENTS program_options REQUIRED )
INCLUDE_DIRECTORIES( ${Boost_INCLUDE_DIR} )
ADD_EXECUTABLE( anyE...
Can Powershell Run Commands in Parallel?
I have a powershell script to do some batch processing on a bunch of images and I'd like to do some parallel processing. Powershell seems to have some background processing options such as start-job, wait-job, etc, but the only good resource I found for doing parallel work was writing the text of a...