Does Java Have True Single Inheritance?

I’ve been doing some studying on the types of inheritance. From what I’ve learned:

  • Single inheritance refers to when a class inherits another class.
  • Multi-level inheritance refers to when a class inherits another class that inherits another class, etc.
  • Hierarchical inheritances refers to when a super-class that has many sub-classes.

Say you wanted to have B inherit from A. In Java, all classes are ultimately inherited from the Object class. Therefore, A -> B becomes Object -> A -> B.

Now since A inherits Object and Object has many sub classes, is it safe to say that A -> B is single or hierarchical inheritance? Can you have “true” single inheritance in Java?

Sharepoint 2013 – Combining a list of PDF files on Sharepoint to display as single multipage PDF

I am digging around for some solutions, but can’t seem to find any. Looking for suggestions…

I have a library that I have a bunch of single page pdf documents, each with a sheet number being used as a file name. However, these files are very complex, and each as its own use case in a variety of situations. I would like to enhance user experience by being able to divert traffic by use case, then displaying an appropriate file so users can easily navigate the individual files.

For example, say you have 5 files, with 1001, 1002, 1003, 1004, 1005 as file names. 1001 is related to a, b, c. 1002 is related to b. 1003 is related to c, d. 1004 is related to c, d, e. 1005 is related to a, b, c, d, e.

I would like to find a way for users to say, “oh, I want everything related to a” and be able display a pdf with 1001 and 1005. Is that possible? Basically, I am looking for something similar to a document set for pdf.

I have considered using a combination of managed meta data, adding category columns for major filters, and search as a data retrieval tool. However, the downside is that people will have to click on each single file and find the file they need, which impacts users’ experience and also efficiency.

While I can certainly combine 1001 and 1005 myself and upload it as a separate file, the challenge is that (1) these files are updated by different people and (2) it will be very difficult to generate a large number of combined files with different sheet combinations.

If I go with premaking all the combined files, each update of a single page at a given time will basically result in a the update of a much bigger number of combined files, which I am certain will result in some files not being updated/or being updated incorrectly (such as the files are combined in a wrong order of sheets, etc). So if there is a good way to devise a system that does this automatically, where I can just predefine a use case of “a” will combine files of names 1001 and 1005, then each execution will ensure that the most current file is retrieved for 1001 and 1005, provided that the individual files are appropriately updated.

I can consider running a script as well to create combined files as well for each use case and upload those files – which may then make this a non-sharepoint question. But seeing what options are available first before making a choice on how to tackle this.

Magento 2.3.1 – Single Install – Multi Website, Store & Currency – Dashboard not showing sale amounts

I’m running a single install multi website multi currency website.

For example

The base website and store is US with currency set to $

Website – US | Store – US | View – XYZ US | Currency – $

Website – Singapore | Store – SG | View – XYZ Singapore | Currency – S$

Website – Japan | Store – JP | View – XYZ Japan | Currency – ¥

Website – UK | Store – UK | View – XYZ UK | Currency – £

However the dashboard when set to “All Store Views” doesn’t show any sales amounts even though orders a shown. As below.

Here the

  • first order is in S$ (Singapore Store)
  • second order is in Yen (Japan store)
  • third store is in £ (UK Store)

enter image description here

I’m not sure if this is a bug in magento 2.3.1 or if there is some setting that I’ve failed to set that’s causing this issue.

Code outputs capital “D” if input is single 1 or 0 in addition to desired output

Tasked with writing a small program for an intro programming course where “#”s are output in the terminal depending on the integers input, executed when EOF character is input. It looks terrible but it works fine except when a single 1 or 0 is input, then a “D” is output immediately after desired output, and I have no idea why or how it could be possible.

I’ve tried wiggling around in the array used to store input for execution and there are no “D”s in there. There are no “D”s anywhere. It doesn’t happen with any other inputs so far.

int main() {     int n = 0;     int index = 0;     int field[2000] = {};     int length = 0;     while (1)     {         int check = scanf("%d", &n);         if (check == EOF)         {                 break;         }         field[index] = n;         index += 1;         length += 1;     }     for (int i = 0; i < length ; i++)     {         if (field[i] == 0)         {             printf(" ");         }         else         {             for(int j = 0; j < field[i]; j++)             {                 printf("#");             }         }         printf("\n");     }     return 0; } 

I expected a single “#” to be output or a space, no other characters under any circumstances.

mongoDB: Full text query for strings containing single letters in PyMongo

I have a collection in MongoDB where-in each document contains title and color. I want to perform a full text search with the title key. For this, I am using the following piece of code :

mycol.create_index([('title', 'text')]) mycol.find({"colors" : color, "$  text": {"$  search": search_text}}).limit(10) 

Now, I want to make a query with the following specification :

{     'color' : 'blue',     '$  text' : {          "$  search" : "V Neck"      } } 

This query returns results in which “Neck” as a search text matches but “V” does not appear across the results.

Result on executing the above query:

1. Maniac Men's Fullsleeve Round Neck Round Neck All Over Printed Navy Cotton Tshirt 2. Off White Printed Round Neck Tshirt 3. Blue Striped Round Neck Tshirt 4. Grey Printed Round Neck Tshirt 5. Blue Solid Round Neck Tshirt 6. Blue Solid Round Neck Tshirt 7. Red Printed Round Neck Tshirt 8. Blue Printed Round Neck Tshirt 9. Blue Checked Round Neck Tshirt 10. Grey Printed Round Neck Tshirt 

Is there any way to get results which match the entire keyword “V Neck”?

mongoDB: Full text query for strings containing single letters in PyMongo

I have a collection in MongoDB where-in each document contains title and color. I want to perform a full text search with the title key. For this, I am using the following piece of code :

mycol.create_index([('title', 'text')]) mycol.find({"colors" : color, "$  text": {"$  search": search_text}}).limit(10) 

Now, I want to make a query with the following specification :

{     'color' : 'blue',     '$  text' : {          "$  search" : "V Neck"      } } 

This query returns results in which “Neck” as a search text matches but “V” does not appear across the results.

Result on executing the above query:

1. Maniac Men's Fullsleeve Round Neck Round Neck All Over Printed Navy Cotton Tshirt 2. Off White Printed Round Neck Tshirt 3. Blue Striped Round Neck Tshirt 4. Grey Printed Round Neck Tshirt 5. Blue Solid Round Neck Tshirt 6. Blue Solid Round Neck Tshirt 7. Red Printed Round Neck Tshirt 8. Blue Printed Round Neck Tshirt 9. Blue Checked Round Neck Tshirt 10. Grey Printed Round Neck Tshirt 

Is there any way to get results which match the entire keyword “V Neck”?

Upload multiple files through a single file dialog?

In a Webform, I want to let the user upload multiple files via one call of the file dialog. I found the following modules.

  • Webform Multiple File Upload
  • Webform Multiple File

With either of them, I cannot open the file dialog once and select all the files. Instead, I need to open the file dialog again for every file.

Is there a way to allow file uploads in one go for Webform forms?

Как скрывать bottom navigation view в определённых фрагментах, если использовать паттерн single acitivity?

У меня есть приложение с разными экранами: несколько экранов на которых не нужна bottom navigation view, такие как ввод номера телефона, редактировать профиль, о программе и т.д., и есть три окна на которых навигация нужна, такие как контакты, переписка и настройки программы. Вопрос: как сделать так, чтобы навигация отображалась только на тех экранах где она нужна, если при этом используется паттерн single acitivity?

Была идея скрывать навигацию в фрагментах где она не нужна

final FragmentActivity fragmentActivity = getActivity();     if (fragmentActivity != null) {         getActivity().findViewById(R.id.bottom_layout).setVisibility(View.INVISIBLE);     } 

Но мне кажется, что этот код слишком небезопасный + когда навигация скрывается, то остается пустое место вместо неё.