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Where liquibase stores hash sums?


Where liquibase stores hash sums?

By : Davide Tentori
Date : October 25 2020, 09:10 AM
I wish this helpful for you It's stored in the table named databasechangelog, in column named MD5SUM.
code :


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Implementing a hash which stores any type using C++

Implementing a hash which stores any type using C++


By : Armando Juan Pantoja
Date : March 29 2020, 07:55 AM
this one helps. In a library I am developing I have a class that I want to have a hash storing any kind of data. This is because an algorithm using this library may want to store specific data in the objects of that class. , Finally the solution was using boost::any
code :
//ObjectOfInterest.h
public:
    ...
    bool    hasProperty(const string & prop) const;
    void    emplaceProperty(const string & prop, boost::any value);
    void    setProperty(const string & prop, boost::any value);
    template <class T> const T property(const string & prop) const
    {
    return any_cast<T>(properties.at(prop));
    }
...
private:
    ...
    boost::unordered::unordered_map<string, boost::any> properties;
//ObjectOfInterest.cpp
...
bool ObjectOfInterest::hasProperty(const string & prop) const
{
    return properties.find(prop)!=properties.end();
}

void ObjectOfInterest::emplaceProperty(const string & prop, any value)
{
    properties.emplace(prop, value);
}

void ObjectOfInterest::setProperty(const string & prop, any value)
{
    properties[prop] = value;
}
Returning the value of a hash stores inside a set in redis

Returning the value of a hash stores inside a set in redis


By : wrariza
Date : March 29 2020, 07:55 AM
hop of those help? Look into using the command HGETALL, like so:
code :
HGETALL pages:/myurl
127.0.0.1:6379> HMSET pages:/myurl url /myurl title myTitle description myDescription content myContent lang_mirror /frenchurl
OK
127.0.0.1:6379> SADD pages pages:/myurl
(integer) 1
127.0.0.1:6379> SORT pages BY nosort GET *->url GET *->title GET *->description GET *->content GET *->lang_mirror
1) "/myurl"
2) "myTitle"
3) "myDescription"
4) "myContent"
5) "/frenchurl"
Creating an Array loop that displays 0-101 and stores the sums of their digits individually into that index

Creating an Array loop that displays 0-101 and stores the sums of their digits individually into that index


By : DERRICK HINZ
Date : March 29 2020, 07:55 AM
this one helps. The problem with your code is it just sums up the last digit of the number, it won't work for numbers having digits greater than 2, you have to loop through all the digits and keep adding them to the number.
code :
for(int i = 0; i < arrayNumber.length; i++) {    
    arrayNumber[i] = i;
    int tmp = arrayNumber[i];

    // summing up digits
    while(tmp > 0) {
        arrayNumber[i] += tmp%10; //extracting right-most digit
        tmp /= 10; // removing the right-most digit
    }
    System.out.println(i , arrayNumber[i]);
}
Checking hash sums with same data => Always 2 different sums

Checking hash sums with same data => Always 2 different sums


By : user2302398
Date : March 29 2020, 07:55 AM
it should still fix some issue Solution: I found it out myself. The nonce is being incremented later on. If I want to find out the hash I need to reduce the nonce by one, then it matches. My mistake. Simply put self.nonce += 1 before calculating the hash
Binary tree that stores partial sums: Name and existing implementations

Binary tree that stores partial sums: Name and existing implementations


By : Akanksha
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , Fenwick tree (aka Binary indexed tree) is a data structure that maintains a sequence of elements, and is able to compute cumulative sum of any range of consecutive elements in O(logn) time. Changing value of any single element needs O(logn) time as well.
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