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How does facebook, gmail send the real time notification?
... read some posts about this topic and the answers are comet, reverse ajax, http streaming, server push, etc.
5 Answers
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Django, creating a custom 500/404 error page
...e for Django 2.0
Signatures for handler views were changed in Django 2.0:
https://docs.djangoproject.com/en/2.0/ref/views/#error-views
If you use views as above, handler404 will fail with message:
"handler404() got an unexpected keyword argument 'exception'"
In such case modify your views l...
Is there a way to make AngularJS load partials in the beginning and not at when needed?
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Yes, there are at least 2 solutions for this:
Use the script directive (http://docs.angularjs.org/api/ng.directive:script) to put your partials in the initially loaded HTML
You could also fill in $templateCache (http://docs.angularjs.org/api/ng.$templateCache) from JavaScript if needed (possibly ...
Automatically add newline at end of curl response body
If the HTTP response body for a curl request doesn't contain a trailing newline, I end up with this really annoying condition where the shell prompt is in the middle of the line, and escaping is messed up enough that when I put the last curl command on the screen, deleting characters from that curl ...
Update relationships when saving changes of EF4 POCO objects
...context is closed after request processing and entity content is passed as HTTP response to the client. Next HTTP request provides modified content of the entity which has to be recreated, attached to new context and persisted. Recreation usually happends outside of the context scope (layered archit...
What is makeinfo, and how do I get it?
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If you build packages from scratch:
Download a version from here: http://www.gnu.org/software/texinfo/
As of writing, version 5.2 is the latest.
Learn how to build here: http://www.linuxfromscratch.org/lfs/view/stable/chapter05/texinfo.html
LFS project is constantly updating, but texinfo...
How do I mount a remote Linux folder in Windows through SSH? [closed]
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The best an easiest solution I found is https://github.com/billziss-gh/sshfs-win, connected servers shows up as a fully functioning network drives. This is not a 'Dokany' or 'dokan' based solution which from experiance seems more stable and performant, also see Win...
What is a regular expression which will match a valid domain name without a subdomain?
...? Yeah, "love heart dot com"! To validate the domain name, you need to let http://xn--c6h.com/ pass the validation.
Note, to use this regex, you will need to convert the domain to lower case, and also use an IDN library to ensure you encode domain names to ACE (also known as "ASCII Compatible Encod...
Send file using POST from a Python script
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From: https://requests.readthedocs.io/en/latest/user/quickstart/#post-a-multipart-encoded-file
Requests makes it very simple to upload Multipart-encoded files:
with open('report.xls', 'rb') as f:
r = requests.post('http://htt...
Modify Address Bar URL in AJAX App to Match Current State
...ou'd like to have a discrete URL. For example, if your page's url is:
http://example.com/
If a client side function executed this code:
// AJAX code to display the "foo" state goes here.
location.hash = 'foo';
Then, the URL displayed in the browser would be updated to:
http://example....