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How to delete duplicates on a MySQL table?
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216
this removes duplicates in place, without making a new table
ALTER IGNORE TABLE `table_name` A...
Call by name vs call by value in Scala, clarification needed
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16 Answers
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How useful/important is REST HATEOAS ( maturity level 3)?
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Nobody in the REST community says REST is easy. HATEOAS is just one of the aspects that adds di...
What Process is using all of my disk IO
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You're looking for iotop (assuming you've got kernel >2.6.20 and Python 2.5). Failing that...
SQL - The conversion of a varchar data type to a datetime data type resulted in an out-of-range valu
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Difference between jQuery parent(), parents() and closest() functions
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closest() selects the first element that matches the selector, up
from the DOM tree. Begi...
What is the difference between encode/decode?
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The decode method of unicode strings really doesn't have any applications at all (unless you h...
Comparing two dictionaries and checking how many (key, value) pairs are equal
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If you want to know how many values match in both the dictionaries, you should have said that ...
C++对象布局及多态探索之菱形结构虚继承 - C/C++ - 清泛网 - 专注C/C++及内核技术
...我们先看看这几个类，这是一个典型的菱形继承结构。C100和C101通过虚继承共享同一个父类C041。C110则从C100和C101多重继承而来。
struct C041
{
C041() : c_(0x01) {}
virtual void foo() { c_ = 0x02; }
char c_;
};
struct C100 : public virt...
How do you detect Credit card type based on number?
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+50
The credi...