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ERROR 1452: Cannot add or update a child row: a foreign key constraint fails
...ill need to update the data in the child table (instead of deleting them).
Now, we can utilize Left Join to find all those rows in the child table, which does not have matching values in the parent table. Following query would be helpful to fetch those non-matching rows:
SELECT child_table.*
FROM c...
Static files in Flask - robot.txt, sitemap.xml (mod_wsgi)
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Heads up - there's an easier way to handle this now. Check my reply.
– Sean McSomething
Jan 17 '13 at 23:00
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Allow CORS REST request to a Express/Node.js application on Heroku
...at works for requests from the js console in Chrome, and URL bar, etc. I'm now trying to get it working for requests from another app, on a different domain (CORS).
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NPM modules won't install globally without sudo
...er solution is just ...
npm config set prefix ~
New node commands will now install into your $HOME/bin directory.
No need to change your path!
Since this discussion is really about reducing the security risks of running sudo, you should also be aware that any node app could potentially be ins...
git status shows modifications, git checkout — doesn't remove them
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Okay... so that did it... now git status shows no changes. I've read up on the autocrlf settings, and I just can't seem to get it right.
– rbellamy
Jan 6 '10 at 21:45
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Private pages for a private Github repo
...hub and got a response confirming the fact that ALL pages are public. I've now requested them to add a note to help.github.com/pages.
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What is a tracking branch?
...ch. If you’re on a tracking branch and type git push, Git automatically knows which server and branch to push to. Also, running git pull while on one of these branches fetches all the remote references and then automatically merges in the corresponding remote branch.
When you clone a repository, ...
REST API - why use PUT DELETE POST GET?
...ected (think of it like accessors and mutators for a database structure).
Now we need to move onto the issue of idempotence. Usually REST implements CRUD over HTTP. HTTP uses GET, PUT, POST and DELETE for the requests.
A very simplistic implementation of REST could use the following CRUD mapping:
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How to prevent sticky hover effects for buttons on touch devices
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This is now widely supported in mobile browsers, and works like a charm. I think it should be the accepted answer.
– Trevor Burnham
May 28 '19 at 2:20
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How to get the mouse position without events (without moving the mouse)?
...ge has fully loaded and don't move than. After onload the page immediatly knows the position of the mouse. No mouse movement is needed. So mouseenter is also fired, when the page has loaded and the mouse is inside the document area. That is, what the OP originally wanted. No one other provides this ...