Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed last month. Improve this question The function that I need to implement should take a function to memoize, then return a new function that remembers the inputs to the supplied function.
Tag: optimization
Why does this dynamic programming optimization actually make code slower?
This is from Leetcode problem: Concatenated Words. Below is a working solution. I added what I thought to be an optimization (see code comment), but it actually slows down the code. If I remove the wrapping if statement, it runs faster. To me, the optimization helps avoid having to: call an expensive O(n) substring() check inside wordsSet making an unnecessary
Does putting intermediary math results into variables improve performance in javascript?
I have been playing around with the Riemann zeta function. I want to optimize execution time as much as possible here so I put the intermediary results in temporary variables. But testing revealed that I get no performance boost from this. At least not noticeably. My question is: Even though I couldn’t measure a difference in execution time, what’s theoretically
Custom hook when taking data in next render lost data
I made a hook useSendFormData , when i use it i get Invalid hook call. Hook takes data from SubmitForm url:string, method: post or put success: success message if it was success id: not required but if item has id i is added to api call. auth default false Problem is it loses data on renders I don’t know how
Performances of ‘lineTo’ method when going beyond canvas dimensions
Using a canvas context, assuming I call beginPath then twice lineTo with x=-999, y=-999 and x=50, y=50 then finally stroke, it will draw a line from the top-left corner to the (50,50) point. During the process did the top-left outside part of the line was draw from the outside or did it was draw from the visible canvas part, in
Optimise javascript canvas for mass-drawing of tiny objects
I’ve been working on a game which requires thousands of very small images (20^20 px) to be rendered and rotated each frame. A sample snippet is provided. I’ve used every trick I know to speed it up to increase frame rates but I suspect there are other things I can do to optimise this. Current optimisations include: Replacing save/restore with
Why Has My Google PageSpeed Insights Score Lowered So Much?
Prod For desktop, I have a site with a decent page speed score (currently, 96): https://developers.google.com/speed/pagespeed/insights/?url=https%3A%2F%2Fwww.usstoragecenters.com%2Fstorage-units%2Fca%2Falhambra%2F2500-w-hellman-ave&tab=desktop Stage I’m trying to improve the score (mostly for mobile), but I’ve somehow made it worse (currently, 69 on desktop): https://developers.google.com/speed/pagespeed/insights/?url=https%3A%2F%2Fstage.usstoragecenters.com%2Fstorage-units%2Fca%2Falhambra%2F2500-w-hellman-ave%3Fplain%3Dtrue&tab=mobile Problem While converting the site from Angular (the first link) to plain JavaScript (second link), I’ve managed to lower the desktop Google PageSpeed
find sum of multiples 3 and 5, JS
I’m given a number and I need to find the sum of the multiples of 3 and 5 below the number. For example: 20 => 78 = 3 + 5 + 6 + 9 + 10 + 12 + 15 + 18 My code works, but not for numbers greater than 1,000,000 (I tested it for 100,000 – it gives
Optimizing native hit testing of DOM elements (Chrome)
I have a heavily optimized JavaScript app, a highly interactive graph editor. I now started profiling it (using Chrome dev-tools) with massive amounts of data (thousands of shapes in the graph), and I’m encountering a previously unusual performance bottleneck, Hit Test. This takes up 65% of everything (!), remaining a monster bottleneck in my codebase. I know this is the
gulp – exclude a file when minifying CSS
Im new to Gulp.. I have been able to successfully install and concatenate and minify my .js and .css files, however, there is one .css file which i want to exclude – print.css Ive followed the instructions here: https://www.npmjs.org/package/gulp-ignore install gulp-ignore in my local directory, and modified my gulpfile.js to: Within my CSS Task – Secure, i have included .pipe(exclude(‘Secure/css/print.css’))