So I'm trying to build a small database to track high scores on the pinball machines in our league. I have one table for users which is just an AI id column, and a column with their email address. Then…
The permutations of a mixed radix number can be ordered to achieve Grayness (in the sense of Gray code) with optimal balance and span length. Each of these constraints will be explained in turn. In my examples, I use a…
I need to fill an array which may contain an indeterminate number of subarrays (pallets) -- each with a maximum size of 265cm. I have a flat array of integers (packs) which need to be optimally arranged in pallets (for…
Here is a console command I wrote in Laravel, and I was wondering how can I make it better and faster? What have I done wrong? And if you can introtuce me a book so I can get better at…
I wanted to solve my Oprimization model in Python by Cplex so I installed Cplex in my system (Windows 11) and based on Cplex help insttall setup.py with this command: python C:Program FilesIBMILOGCPLEX_Studio221pythonsetup.py install There are two examples in IBM…
I have a database with over 30,000,000 entries. When performing queries (including an ORDER BY clause) on a text field, the = operator results in relatively fast results. However we have noticed that when using the LIKE operator, the query…
I want to change the svg icon color in css, but it won't change for some reason. Please, help : https://codepen.io/Flowersj/pen/OJExzME I tried adding class to parent tag and trying to style it, didn't work. HTML: <svg class="navigation-icon" xmlns="http://www.w3.org/2000/svg" viewBox="0…
I have an infinite loop Python function for measuring how fast are SECP256K1 public Keys are generated. The script: from time import time a = 0 b = 7 n = 0xfffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141 gx = 0x79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798 gy = 0x483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8 prime =…
I have a MySQL query that searches through a zipcode database for city names. The query takes about 4 seconds, to search through 620,000 zipcodes. I would like ideas how I can make this faster. First, the tables: I have…
Using MySQL 5.7, I have a table of urls containing url_title, url_description, url_keywords Sometimes I just need to look in url_title, but sometimes look for something in all columns. Is it better to just create one index containing all 3…