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Delete all Duplicate Rows except for One in MySQL? [duplicate]
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This took 171 seconds on a 10,000 record table with 450 duplicates. The answer by OMG Ponies took 4 seconds.
– David Gleba
Jul 6 '15 at 19:42
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Timer function to provide time in nano seconds using C++
...unsigned long long rep;
typedef std::ratio<1, 2'800'000'000> period; // My machine is 2.8 GHz
typedef std::chrono::duration<rep, period> duration;
typedef std::chrono::time_point<clock> time_point;
static const bool is_steady = ...
Why is C so fast, and why aren't other languages as fast or faster? [closed]
... only day to write isn't worthwhile? What if that program needs to run 500,000,000+ times a day? Being twice as fast is incredibly significant. If it runs on thousands or millions of CPUs, the cost savings of the extra month of development to achieve twice the performance will be enormous. Basically...
“Full screen”
...isplay: block; /* iframes are inline by default */
background: #000;
border: none; /* Reset default border */
height: 100vh; /* Viewport-relative units */
width: 100vw;
}
<iframe></iframe>
This is supported in most modern browsers - suppo...
Why is it Valid to Concatenate Null Strings but not to Call “null.ToString()”?
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11 Answers
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Active
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Picking a random element from a set
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If the set is not mutated over multiple accesses, you can copy it into an array and then access O(1). Just use myHashSet.toArray()
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Modify tick label text
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this does not appear to work with the current version (1.20)!
– Andrew Jaffe
Mar 13 '13 at 16:38
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Utils to read resource text file to String (Java) [closed]
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Sergey
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answered May 20 '11 at 6:27
Jon SkeetJon Skeet
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Java: how can I split an ArrayList in multiple small ArrayLists?
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polygenelubricantspolygenelubricants
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What is the difference between the Eclipse Package Explorer and the Eclipse Project Explorer?
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Csaba_HCsaba_H
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