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How can you represent inheritance in a database?
...----------------+----------+----------------+------------------+
| 1 | 2010-08-20 12:00:00 | MOTOR | 01-A-04004 | NULL |
| 2 | 2010-08-20 13:00:00 | MOTOR | 02-B-01010 | NULL |
| 3 | 2010-08-20 14:00:00 | PROPERTY | NULL | Oxford Street |
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Differences between distribute, distutils, setuptools and distutils2?
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As of March 2020, most of the other answers to this question are several years out-of-date. When you come across advice on Python packaging issues, remember to look at the date of publication, and don't trust out-of-date information.
The...
How to remove all callbacks from a Handler?
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Alex Karshin
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answered Apr 13 '12 at 17:38
josh527josh527
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How can I let a table's body scroll but keep its head fixed in place?
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answered Sep 29 '08 at 21:36
Ken PennKen Penn
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What is a serialVersionUID and why should I use it?
... Mike B.
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answered Nov 12 '08 at 23:30
Jon SkeetJon Skeet
1210k77277...
What's wrong with cplusplus.com?
...s, then use Erase-Remove Idiom:
v.erase(std::remove(v.begin(), v.end(), 10), v.end());
But cplusplus.com gives incorrect information about std::remove. It says
Notice that this function does not alter the elements past the new end, which keep their old values and are still accessible.
whi...
What is the difference between \r and \n?
...language-sensitive. In C# and Java, for example, \n always means Unicode U+000A, which is defined as line feed. In C and C++ the water is somewhat muddier, as the meaning is platform-specific. See comments for details.
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Why malloc+memset is slower than calloc?
...loc() are mostly there to take small allocations (anything from 1 byte to 100s of KB) and group them into larger pools of memory. For example, if you allocate 16 bytes, malloc() will first try to get 16 bytes out of one of its pools, and then ask for more memory from the kernel when the pool runs d...
Why is there no Constant feature in Java?
...ommunity Process for implementing const correctness in Java was closed in 2005, implying that const correctness will probably never find its way into the official Java specification.
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improv...
Difference between natural join and inner join
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This is addressed somewhat in user166390's answer. Say you have a natural join between Customers and Employees, joining on EmployeeID. Employees also has a ManagerID field. Everything's fine. Then, some day, someone adds a ManagerID field to the Customers tabl...