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What is the difference between up-casting and down-casting with respect to class variable

...og. Police Dog - Police Dog extends Pet Dog. public class Dog{ public String getType () { System.out.println("NormalDog"); return "NormalDog"; } } /** * Pet Dog has an extra method dogName() */ public class PetDog extends Dog{ public String getType () { System.ou...
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Difference between Hashing a Password and Encrypting it

...sible, you apply the secure hash algorithm and you cannot get the original string back. The most you can do is to generate what's called "a collision", that is, finding a different string that provides the same hash. Cryptographically secure hash algorithms are designed to prevent the occurrence of ...
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sphinx-build fail - autodoc can't import/find module

...ath to the front of sys.path using os.path.insert(0, ...), and just add an extra . import os import sys sys.path.insert(0, os.path.abspath('..')) If you have setup your sphinx project to use separate build and source directories, that call should instead be: sys.path.insert(0, os.path.abspath('....
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How to view the assembly behind the code using Visual C++?

...isassembler on the .exe. e.g. http://rextester.com/OKI40941 #include <string> #include <boost/filesystem.hpp> #include <Windows.h> using namespace std; static string my_exe(void){ char buf[MAX_PATH]; DWORD tmp = GetModuleFileNameA( NULL, // self ...
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How do you select a particular option in a SELECT element in jQuery?

... will match pieces of text; problematic if any of your option text is a substring of another option text. – Ryan Nov 3 '14 at 21:56 28 ...
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Merge 2 arrays of objects

...mplexity as @YOU's answer, except that this is much slower (largely due to extra function calls and the fact the YOU's answer exploits the JS associative arrays trick to find items with O(1) lookup). This is besides the fact that you need to bring an additional library. – Mrch...
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How do I join two lines in vi?

... 'J' gives extra space while joining lines. – Maxim Kim Dec 16 '09 at 7:25 3 ...
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getting exception “IllegalStateException: Can not perform this action after onSaveInstanceState”

... @t0mm13b: to add more as 600 chars are not enough, you have to investigate first what is really causing this for you. You have also to realize that above is an ugly hack and I am not taking any responsibility if it runs or not (for me was the best soluti...
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Why is the minimalist, example Haskell quicksort not a “true” quicksort?

...implementation of putStrLn works by copying the characters of the argument String into to an output buffer. But when it enters this loop, show has not run yet. Therefore, when it goes to copy the first character from the string, Haskell evaluates the fraction of the show and quicksort calls needed t...
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Java Timestamp - How can I create a Timestamp with the date 23/09/2007?

...w Timestamp(time); giving error that no constructor like this which take a string value :( – Bhanu Sharma May 14 '14 at 13:02 ...