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Lost connection to MySQL server at 'reading initial communication packet', system error: 0
...to the loop-back IP (127.0.0.1 / localhost) which effectively cuts you off from connecting from "outside".
If this is the case, you need to upload the script to the webserver (which is probably also running the MySQL server) and keep your server host as 'localhost'
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How do I implement IEnumerable
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You might as well inherit from Collection<MyObject> and then you won't have to write any custom code.
– John Alexiou
Oct 2 '18 at 21:23
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Should I declare Jackson's ObjectMapper as a static field?
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Yes, that is safe and recommended.
The only caveat from the page you referred is that you can't be modifying configuration of the mapper once it is shared; but you are not changing configuration so that is fine. If you did need to change configuration, you would do that from ...
AngularJS ui-router login authentication
... // check and see if we have retrieved the
// identity data from the server. if we have,
// reuse it by immediately resolving
if (angular.isDefined(_identity)) {
deferred.resolve(_identity);
return deferred.promise;
}
// otherwise...
Regex to validate date format dd/mm/yyyy
...ted it online using some website and now i also don't remember the website from which I generated this image. I will add the reference once I remember:)
– Alok Chaudhary
Apr 10 '15 at 3:58
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Tying in to Django Admin's Model History
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When a user makes a change, add to the log like this (stolen shamelessly from contrib/admin/options.py:
from django.contrib.admin.models import LogEntry, ADDITION
LogEntry.objects.log_action(
user_id = request.user.pk,
content_type_id = ContentType.objects.get_for_model(object).p...
How do you serialize a model instance in Django?
...d that's all what django serializers need to correctly serialize it, eg.:
from django.core import serializers
# assuming obj is a model instance
serialized_obj = serializers.serialize('json', [ obj, ])
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Can I prevent the Firefox developer tools network panel from clearing on page reload?
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From Firefox 31 onwards you can use the "Enable persistent logs" setting to prevent the Network Monitor from clearing the list on reload.
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How to quit android application programmatically
...cally used when an application can be launched on to another task (such as from an ACTION_VIEW of a content type it understands) and the user has used the up navigation to switch out of the current task and into its own task. In this case, if the user has navigated down into any other activities of ...
How to get the path of a running JAR file?
...f your class.
Obviously, this will do odd things if your class was loaded from a non-file location.
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