Buddy List: Relational Database Table Design

So, the modern concept of the buddy list: Let's say we have a table called Person. Now, that Person needs to have many buddies (of which each buddy is also in the person class). The most obvious...

QLabel setText not displaying text immediately before running other method

I have a basic label that is supposed to indicate to the user that the program is searching directories for several seconds. So it goes like... self.label.setText(QString("Searching...")) # method...

MVC, EF - DataContext singleton instance Per-Web-Request in Unity

I have a MVC 3 web application, where I am using the Entity Framework for the data access. Furthermore, I have made a simple use of the repository pattern, where e.g. all Product related stuff is...

How to insert extra elements into a SimpleCursorAdapter or Cursor for a Spinner?

I have a Spinner which is to show a list of data fetched from database. The data is returned to a cursor from query, and the cursor gets passed to spinner's SimpleCursorAdapter. It is working fine...

Splitting a string by a character

I know this is a quite easy problem but I just want to solve it for myself once and for all I would simply like to split a string into an array using a character as the split delimiter. (Much like...

Best GNU Find Replacement

I'm looking for a better find. The reason is that the find user interface is unintuitive to me (in particular, the pruning / -print style) and difficult to wrap in a function due to strict...

What is the best way to route paths in a large grid?

I'm working on an algorithm to find a set of non intersected paths in a grid for a given pairs of points.. Like this for these pairs: (9,4) and (12,13) The output should be something like this: ...

Search for value in DataGridView in a column

I want the user to be able to search for a number in a column in the DataGridView (dgv). The dgv can hold many records. Each record has a Project Number. So I want the user to be able to search...

Detect duplicate videos from YouTube

In consideration to my M.tech Project I want to know if there is any algorithm to detect duplicate videos from youtube. For example (here are links of two videos): random user upload upload by...

How to throttle search (based on typing speed) in iOS UISearchBar?

I have a UISearchBar part of a UISearchDisplayController that is used to display search results from both local CoreData and remote API. What I want to achieve is the "delaying" of the search on...

Redis: how to delete multiple keys matching pattern?

I need to remove 10 000 keys. What is better way: to exec this kind of script EVAL "return redis.call('del', unpack(redis.call('keys', ARGV[1])))" 0 "ROOT" May be better is to set expiration...

Is there a definite Selenium solution to modal pop up dialogs in Internet Explorer with Java?

I have searched many, many places for a solution to my problem, but haven't found it. I figured that by now, Selenium would have provided a straight forward and simple solution to handling modal...

houghcircles - finding parameters

Is there a manner in which to make circle detection parameter-less? - And why do the parameters in cv2.HoughCircles() not get affected sometimes after changing them? I have a for loop to alter...

Deferred error when jedi:complete-on-dot

I get the following error when I try to use jedi:complete-on-dot: deferred error : (error "Keyword argument :triggered not one of (:requires :force-init)") I will note that Jedi is not the only...

Offline IndexDB vs Browser Eviction

I'm puzzled by the juxtaposition of pitching IndexDB for offline (e.g.) single-page HTML apps with the fact that the documentation seems to indicate the browser can trash your local data at any...

Case insensitive regex in Bash

I want to know which method is better to check if a var (input by user on keyboard) matches with a regex in a case insensitive way. I know there are some different possibilities. Example: I want a...

spring security manual login best practice

I'm using spring security to implement a programmatic, manual user login. I have a scenario where I have positively established the user's identity, and wish to log them in. I don't know their...

Ionic on Android: Redirect to http://localhost/

The Problem: The IONIC-Android application refuses a redirect to http://localhost/ sent from an SSO-site. And crashes with the following error: The Environment: Ionic 3 Angular Android...

How do I give my MacOS app permission to create "WAL" file to open an SQLite DB with journal-mode=WAL?

I'm an experienced programmer, but this is my first MacOS app (on 10.15.2), which needs to read an sqlite db of the user's choice (potentially anywhere on the machine) At first it wouldn't open...

Google captcha with svelte

So I had an issue with svelte and google Recaptcha API. My main HTML file <!DOCTYPE html> <html lang="en"> <head> <meta charset='utf-8'> <meta name='viewport'...

How to get all possible branch with python anytree

I'm using anytree currently to generate my search tree, how do I get all possible branch starting from the root node in list format from anytree import Node, RenderTree, AsciiStyle f =...

How to make Audio Trimming widget in flutter

I am new in flutter. I want to trim a audio. So i got the audiocutter package to implement trimming But problem is that "How to get input from the user in better UI?". I was search about that but...

Data Model for Blog Post with comments in Elastic Search

What's the best way to structure a post/comment system using elasticsearch? I'm using elasticsearch as a secondary database. There would be a post with a multithreaded commenting system, maybe...

Check if ListView.builder returns only empty Containers

I am having a list presented by a ListView.builder and I use a Function to check if an object in the list is being searched, but I want to present a screen when no object was found. So the user...

Why do I get error "Could not find a version that satisfies the requirement scipy==1.5.3" when running "pip install -r requirements.txt"?

I am trying to install all needed modules for an existing Django project. When I run pip install -r requirements.txt I get the following errors: ERROR: Could not find a version that satisfies the...

MySQL "Incorrect DATE value" in SELECT query inside WHERE clause

MySQL version: 8.0.23-0ubuntu0.20.04.1 - (Ubuntu) When running sample query: SELECT * FROM `redacted-tbl` WHERE `redacted-col` = 'some-invalid-date' ORDER BY `redacted-col` DESC LIMIT 0,...

Failed building wheel for scs and cvxpy on amazon linux2

I am trying to create an AWS lambda layer for cvxpy, following Rineesh Konaparthi's method. I run to error when run pip install cvxpy: Building wheels for collected packages: scs Building wheel...

How to manage Google Cloud credentials for local development

I searched a lot how to authenticate/authorize Google's client libraries and it seems no one agrees how to do it. Some people states that I should create a service account, create a key out from...

Can't install Matplotlib on Python 3.10 after it's release (2021-10-05)

After the realease of python 3.10, I "repiped" my modules for the newest version and I'm getting some troubles. First of all I tried to pip Numpy as it's the required one for matplotlib. But I got...

So many sub-queries in advanced search "Mysql-Laravel"

I'm building an "Ads" Website based on Laravel as an API where it contains a dynamic-advanced search. Ads can have multiple attributes and the user can have advanced search, but it leads to so...