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When should I release objects in -(void)viewDidUnload rather than in -dealloc?
...ld have been set through IBOutlets when loading from a nib, or programmatically inside -loadView, for instance.
The additional ownership of subviews by the UIViewController means that even when its view is removed from the view hierarchy and released to save memory, through which the subviews are a...
What is the effect of encoding an image in base64?
...
Here's a really helpful overview of when to base64 encode and when not to by David Calhoun.
Basic answer = gzipped base64 encoded files will be roughly comparable in file size to standard binary (jpg/png). Gzip'd binary files will ha...
How should I detect unnecessary #include files in a large C++ project?
...a .cpp file, Properties->C/C++->Advanced) that will output a tree of all included files at compile time. This can help in identifying files that shouldn't need to be included.
You can also take a look at the pimpl idiom to let you get away with fewer header file dependencies to make it easie...
The type or namespace name does not exist in the namespace 'System.Web.Mvc'
...Copy Local property to True or False
In Solution Explorer, click the Show All Files button to display the References node.
Open the References node for the project.
Right-click a reference in the References list, and click Properties.
The properties associated with that reference appear in a list...
How can I see incoming commits in git? [duplicate]
...be this:
git fetch && git log ..origin/master
That is, "go grab all of the stuff from the upstream, and then compare my current branch against the upstream master branch."
Similarly, outgoing would be this:
git fetch && git log origin/master..
In practice, I just type those ma...
Retrieve specific commit from a remote Git repository
...(Q2 2015), fetching a single commit (without cloning the full repo) is actually possible.
See commit 68ee628 by Fredrik Medley (moroten), 21 May 2015.
(Merged by Junio C Hamano -- gitster -- in commit a9d3493, 01 Jun 2015)
You now have a new config (on the server side)
uploadpack.allowReachable...
Failed to load c++ bson extension
...
I guess you did not have the make tools available when you installed your mongodb library. I suggest you do
xcode-select --install (on a mac)
or sudo apt-get install gcc make build-essential (on ubuntu)
and run
rm -rf node_modules
npm cache clean
npm install
OR just npm update bas...
Real World Use of Zookeeper [closed]
...wondered whether anybody was using it currently and what they were specifically using it for storing.
13 Answers
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Get records with max value for each group of grouped SQL results
..., age desc, Person) x
group by `Group`
This works because in mysql you're allowed to not aggregate non-group-by columns, in which case mysql just returns the first row. The solution is to first order the data such that for each group the row you want is first, then group by the columns you want the...
What does in XML mean?
...for the parser to interpret as only character data, not markup."
Syntactically, it behaves similarly to a comment:
<exampleOfAComment>
<!--
Since this is a comment
I can use all sorts of reserved characters
like > < " and &
or write things like
<foo><...