console.clear(); document.addEventListener('mouseup', e => console.log("Stop")) // Keyboard keys document.addEventListener('mousedown', e => console.log("Hold ") ) Please Click on This Blank Space to simulate the mouseup and mousedown event. Have a great day !! let paths = document.querySelectorAll('path'); // paths is an…
I have a Seagate FireCuda 530 4TB SSD (M.2 NVMe), whose specs say its sequential read is up to 7.3 GB/s, and its IOPS is 1M. I'm trying to write a program that achieves anything close to the claimed speed.…
let big_coordinates_arr =[ [1,2],[3,4],[5,8],[7,9]] ; let small_coordinates_arr=[ [3,4],[7,9] ] ; let is_same = (arr1,arr2) => arr1.length == arr2.length && arr1.every(function(element, index) { return element === arr2[index]; }); let result = big_coordinates_arr.filter(c1 => !small_coordinates_arr.some(c2 => is_same(c1,c2))) console.log(result) let big_coordinates_arr =[ [[1,2],[3,4]],…
I have been taking a React performance training course and this code base is used as an example: https://github.com/stevekinney/wordman/blob/main/src/components/application.jsx#L10 When we call the function inside of useState() it is called on every re-render even though the actual value of correctAnswer…
I want to know setState the difference in order. I write simple code below. setState(() { _counter++; }); _counter++; setState(() { }); I think setState frequency will affect the memory leak. I want to create a more stable version of…
Edit: EXPLAIN result for the first two queries when using src_cus_lang: EXPLAIN result for the last two queries when using cust_lang_src: Original post: I'm using MySQL and have a table as follows: CREATE TABLE tm( id INT AUTO_INCREMENT PRIMARY KEY,…
I've got a PHP+mySQL website that shows data of 300,000 products: name, description, how to fix it, where to buy it, etc. Initially, the mySQL table is designed in the following way: - product_id: MEDIUMINT - category_id: SMALLINT - weight_kg:…
There are two large table num,pre in database : d num Table "public.num" Column | Type | Collation | Nullable | Default ----------+-------------------------+-----------+----------+--------------------------------- id | integer | | not null | nextval('num_id_seq'::regclass) adsh | character varying(20) | | | tag…
I am building a web app for a client who has ~1M rows of data in their MySQL database. The data looks approximately like this: Products +---------+-----------+---------+-------------+---------+----------+ | Id | Name | Size | Colour | 4 Other attributes |…
I'm trying to optimise the Digital Ocean droplet that my Laravel web app is running on, and have noticed that MySQL is constantly using ~50% of its 1GB RAM. By far the most common and well-attested method for decreasing MySQL's…