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How to avoid mysql 'Deadlock found when trying to get lock; try restarting transaction'
...etime <= now() - INTERVAL 900 SECOND
To
DELETE FROM onlineusers
WHERE id IN (
SELECT id FROM onlineusers
WHERE datetime <= now() - INTERVAL 900 SECOND
ORDER BY id
) u;
Another thing to keep in mind is that mysql documentation suggest that in case of a deadlock the client should...
Instantiate and Present a viewController in Swift
...boardName", bundle: nil)
let vc = storyboard.instantiateViewController(withIdentifier: "myVCID")
self.present(vc, animated: true)
If you're having problems with init(coder:), please refer to EridB's answer.
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Receive result from DialogFragment
... If target is activity I would declare interface with method like "void onActivityResult2(int requestCode, int resultCode, Intent data)" and implement it by an Activity. In DialogFragment just getActivity and check for this interface and call it appropriately.
– Ruslan Ya...
How to Create Deterministic Guids
...n our application we are creating Xml files with an attribute that has a Guid value. This value needed to be consistent between file upgrades. So even if everything else in the file changes, the guid value for the attribute should remain the same.
...
How to position a DIV in a specific coordinates?
...pectively. It must have position: absolute;
var d = document.getElementById('yourDivId');
d.style.position = "absolute";
d.style.left = x_pos+'px';
d.style.top = y_pos+'px';
Or do it as a function so you can attach it to an event like onmousedown
function placeDiv(x_pos, y_pos) {
var d = docu...
How can I make a multipart/form-data POST request using Java?
...uest. It's expecting the following parameters: ~@PathVariable final String id, @RequestParam("image") final MultipartFile image, @RequestParam("l") final String l, @RequestParam("lo") final String lo, @RequestParam("bac") final String bac, @RequestParam("cac") final String ca...
Setting git parent pointer to a different parent
... public to where they've pulled it, modifying the commit is probably a Bad Idea™. This is due to #1, and thus the resulting confusion the other users' repositories will encounter when trying to figure out what happened due to your SHAs no longer matching theirs for the "same" commits. (See the "RE...
Switching between Android Navigation Drawer image and Up caret when using fragments
When using the Navigation Drawer the Android devs are recommending that in the ActionBar "only those screens that are represented in the Navigation Drawer should actually have the Navigation Drawer image" and that "all other screens have the traditional up carat."
...
Elasticsearch query to return all records
...n link above suggests.
EDIT: scan Deprecated in 2.1.0.
scan does not provide any benefits over a regular scroll request sorted by _doc. link to elastic docs (spotted by @christophe-roussy)
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Rails: create on has_one association
...op.create(params[:shop])
@user.shop = @shop
Now here's why your version did not work:
You probably thought that this might work because if User had a has_many relation to Shop, @user.shops.create(params[:shop]) would work. However there is a big difference between has_many relations and has_one r...