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Explanation of strong and weak storage in iOS5
... all remaining weak pointers will be zeroed out.
Perhaps an example is in order.
Imagine our object is a dog, and that the dog wants to run away (be deallocated).
Strong pointers are like a leash on the dog. As long as you have the leash attached to the dog, the dog will not run away. If five peo...
What are sessions? How do they work?
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Because HTTP is stateless, in order to associate a request to any other request, you need a way to store user data between HTTP requests.
Cookies or URL parameters ( for ex. like http://example.com/myPage?asd=lol&boo=no ) are both suitable ways to ...
C# 4.0 optional out/ref arguments
...lOutParameter(&MyInteger); } // pass in the address of MyInteger.
In order to get this to compile, you will need to enable unsafe code in the project options. This is a really hacky solution that usually shouldn't be used, but if you for some strange, arcane, mysterious, management-inspired de...
Grep and Sed Equivalent for XML Command Line Processing
...am, and pass in the arguments' array in the script to hpricot? E.g., in a PHP shell script, something like the following should work: <?php /path/to/hpricot $argv ?>
– alastairs
Sep 18 '08 at 20:45
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Proper SCSS Asset Structure in Rails
...e problem with CSS is, you do not want to automatically add all files.
The order of which your sheets are loaded and processed by the browser is essential. So you will always end up explicitly importing all your css.
As an example, lets say you have a normalize.css sheet, to get a default look ins...
add created_at and updated_at fields to mongoose schemas
...ppropriate
fields updated and the rest of the fields copied over.Then in order to
query this document you would get the one with the newest timestamp or
the highest version which is not "deleted" (the deleted field is undefined or false`).
Data immutability ensures that your data is debug...
A semantics for Bash scripts?
...ion to Bash as a programming language. For example: What is the evaluation order? what are the scoping rules? What is the typing discipline, e.g. is everything a string? What is the state of the program -- is it a key-value assignment of strings to variable names; is there more than that, e.g. the s...
What's the difference between deque and list STL containers?
...idates only the iterators that point to the elements that are removed. The ordering of iterators may be changed (that is, list::iterator might have a different predecessor or successor after a list operation than it did before), but the iterators themselves will not be invalidated or made to point t...
Finding median of list in Python
... be of any size and the numbers are not guaranteed to be in any particular order.
24 Answers
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examining history of deleted file
...t this error message: svn cat [url]/trunk/include/syeka/poster_funk.incl.php -r 50 > out.txt svn: '/admintools/!svn/bc/131/trunk/include/syeka/poster_funk.incl.php' path not found See @Bert Huijben's response further down this thread for a working solution.
– Keith Palmer...