If you're just looking at a basic function, and are ok with your code being public, consider https://codereview.stackexchange.com/ https://codereview.stackexcha

If you're just looking at a basic function, and are ok with your code being public, consider https://codereview.stackexchange.com/ https://codereview.stackexchange.com/ or the code review subreddits. If you're looking for more professional code review from experienced devs check us out at https://www.pullrequest.com https://www.pullrequest.com. PullRequest does code review as a service for every popular language, definitely the ones you listed.