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Check if a row exists, otherwise insert

... things can overbook a flight, as it will insert a new row when there are 10 tickets max and you are booking 20. share | improve this answer | follow | ...
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static function in C

...t); /* prototype */ int f2(int); /* prototype */ int main(void) { f1(10); /* ok, f1 is visible to the linker */ f2(12); /* nope, f2 is not visible to the linker */ return 0; } share | ...
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What port is a given program using? [closed]

...| edited May 23 '17 at 12:02 Community♦ 111 silver badge answered Sep 19 '08 at 20:41 ...
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What's the complete range for Chinese characters in Unicode?

U+4E00..U+9FFF is part of the complete set,but not all 6 Answers 6 ...
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proguard hell - can't find referenced class

... Wesley 3,80966 gold badges3535 silver badges5858 bronze badges answered Aug 9 '11 at 21:12 Eric LafortuneEric L...
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How are virtual functions and vtable implemented?

...ned behavior if it is not defined (which it usually isn't) (ISO/IEC 14882:2003 10.4-2). In practice it does allocate a slot in the vtable for the function but does not assign an address to it. This leaves the vtable incomplete which requires the derived classes to implement the function and complet...
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Why are functions in Ocaml/F# not recursive by default?

...uence in OCaml: let shannon fold p = let p x = p x *. log(p x) /. log 2.0 in let p t x = t +. p x in -. fold p 0.0 Note how the argument p to the higher-order shannon function is superceded by another p in the first line of the body and then another p in the second line of the body. Conver...
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JavaScript for…in vs for

...which idiom is best understood. An array is iterated using: for (var i = 0; i < a.length; i++) //do stuff with a[i] An object being used as an associative array is iterated using: for (var key in o) //do stuff with o[key] Unless you have earth shattering reasons, stick to the establis...
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Is there a performance difference between i++ and ++i in C?

... 406 Executive summary: No. i++ could potentially be slower than ++i, since the old value of i mig...
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Can a Byte[] Array be written to a file in C#?

... | edited Jul 17 '13 at 0:17 answered Dec 19 '08 at 16:58 ...