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How to use NSCache
...ld have a lifetime beyond the method or handful of methods
// that use it. For example, you could make it a field of your application
// delegate, or of your view controller, or something like that. Up to you.
NSCache *myCache = ...;
NSAssert(myCache != nil, @"cache object is missing");
// Try to g...
Entity Framework .Remove() vs. .DeleteObject()
... relationship between the two:
If the relationship is optional, i.e. the foreign key that refers from the child to the parent in the database allows NULL values, this foreign will be set to null and if you call SaveChanges this NULL value for the childEntity will be written to the database (i.e. t...
Differences between action and actionListener
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actionListener
Use actionListener if you want have a hook before the real business action get executed, e.g. to log it, and/or to set an additional property (by <f:setPropertyActionListener>), and/or to have access to the component which invoked the action (which is available by...
What is the purpose of the '@' symbol in CSS?
... question and I noticed the user is using some notation I've never seen before:
5 Answers
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Why is JsonRequestBehavior needed?
...a process known as JSON Hijacking. You do not
want to return sensitive information using JSON in a GET request. For
more details, see Phil's post at
http://haacked.com/archive/2009/06/24/json-hijacking.aspx/ or this SO post.
Haack, Phil (2011). Professional ASP.NET MVC 3 (Wrox Programmer ...
Async image loading from url inside a UITableView cell - image changes to wrong image while scrollin
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Assuming you're looking for a quick tactical fix, what you need to do is make sure the cell image is initialized and also that the cell's row is still visible, e.g:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIn...
Regex lookahead for 'not followed by' in grep
I am attempting to grep for all instances of Ui\. not followed by Line or even just the letter L
5 Answers
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In HTML5, is the localStorage object isolated per page/domain?
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The stores are per origin, where "origin" is the same as for the Same Origin Policy (a combination of schema [http vs. https, etc.], port, and host). From the spec:
Each top-level browsing context has a unique set of session storage areas, one for each origin.
Thus, the stora...
How does grep run so fast?
...n shell, earlier I used to use substring method in java but now I use GREP for it and it executes in a matter of seconds, it is blazingly faster than java code that I used to write.(according to my experience I might be wrong though)
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Can you turn off Peek Definition in Visual Studio 2013 and up?
...can't find any details on if this is possible. What I would really like is for the Ctrl + Click functionality to go back to opening the definition in its own tab, like in previous versions of VS. Is this possible?
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