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What is the __del__ method, How to call it?
...hod: x.__del__(). Obviously, you should you do so only if you know that it doesn't mind to be called twice. Or, as a last resort, you can redefine this method using
type(x).__del__ = my_safe_cleanup_method
share
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What is the usefulness of PUT and DELETE HTTP request methods?
...ified version of the one residing on the origin server. If the Request-URI does not point to an existing resource, and that URI is capable of being defined as a new resource by the requesting user agent, the origin server can create the resource with that URI …
For the full specification visit:
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How to create a MySQL hierarchical recursive query
...e on Oracle, DB2, Informix, CUBRID and other databases.
MySQL version 5.7 does not offer such a feature. When your database engine provides this syntax or you can migrate to one that does, then that is certainly the best option to go for. If not, then also consider the following alternatives.
Alte...
PHP Function Comments
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Functions:
/**
* Does something interesting
*
* @param Place $where Where something interesting takes place
* @param integer $repeat How many times something interesting should happen
*
* @throws Some_Exception_Class If something int...
Left Align Cells in UICollectionView
...sects with this line rectangle created from the cell with index i.
If it does intersect, the cell with index i is not the left most cell in the line.
→ Get the previous cell's frame (with the index i−1) and move the current cell next to it.
If it does not intersect, the cell with index i is th...
Why do 64-bit DLLs go to System32 and 32-bit DLLs to SysWoW64 on 64-bit Windows?
... directory, SysWOW64, contains the 32-bit DLLs. The file system redirector does the magic of hiding the real System32 directory for 32-bit processes and showing SysWOW64 under the name of System32."
Edit: If you're talking about an installer, you really should not hard-code the path to the system f...
When would anyone use a union? Is it a remnant from the C-only days?
...h it. The same applies to functions returning a union instance, see h: how does the caller know what's inside?
If a union instance never gets passed as an argument or as a return value, then it's bound to have a very monotonous life, with spikes of excitement when the programmer chooses to change i...
Why do we need fibers
...r
e.next # => 1
e.next # => 2
e.next # => 3
Wait a minute... does anything seem strange there? You wrote the yield statements in an_iterator as straight-line code, but the Enumerator can run them one at a time. In between calls to next, the execution of an_iterator is "frozen". Each ti...
Maximum single-sell profit
...tep we make two recursive calls,
# one on each half of the array, and then does O(n) work to scan the array
# elements to find the minimum and maximum values. This gives the recurrence
#
# T(1) = O(1)
# T(n / 2) = 2T(n / 2) + O(n)
#
# Using the Master Theorem, this recurrence solves to O(...
How did Google manage to do this? Slide ActionBar in Android application
I really want to implement this (the side navigation) in an app of my own, does anyone know how Google managed to do this?
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