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How to prevent browser page caching in Rails
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Finally figured this out - http://blog.serendeputy.com/posts/how-to-prevent-browsers-from-caching-a-page-in-rails/ in application_controller.rb
After Rails 5:
class ApplicationController < ActionController::Base
before_a...
What's the easiest way to escape HTML in Python?
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< to &lt;
> to &gt;
& to &amp;
That is enough for all HTML.
EDIT: If you have non-ascii chars you also want to escape, for inclusion in another encoded document that uses a different encoding, like Craig says, just use:
data.encode('ascii', 'xmlcharrefreplace')
Don't for...
Creating a UIImage from a UIColor to use as a background image for UIButton [duplicate]
...'re trying to apply; the CGColor is backed by that UIColor, but ARC will deallocate the UIColor before you have a chance to use the CGColor.
The clearest solution is to have a local variable pointing to your UIColor with the objc_precise_lifetime attribute.
You can read more about this exact cas...
Targeting position:sticky elements that are currently in a 'stuck' state
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BoltClock♦BoltClock
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SVN upgrade working copy
...ion client to at least 1.7.
With the command line client, you have to manually upgrade your working copy format by issuing the command svn upgrade:
Upgrading the Working Copy
Subversion 1.7 introduces substantial changes to the working copy
format. In previous releases of Subversion, Sub...
Reading InputStream as UTF-8
...ug that the OutputStreamWriter constructors have: only one of the four actually condescends to tell you when something goes wrong. You again have to use the fancy CharsetDecoder dec argument there, too. The only safe and sane thing to do is to consider all other constructors deprecated, because they...
How to create abstract properties in python abstract classes
In the following code, I create a base abstract class Base . I want all the classes that inherit from Base to provide the name property, so I made this property an @abstractmethod .
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In Django, how do I check if a user is in a certain group?
...add(group) # user is now in the "Editor" group
then user.groups.all() returns [<Group: Editor>].
Alternatively, and more directly, you can check if a a user is in a group by:
if django_user.groups.filter(name = groupname).exists():
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Note that groupname can also be the ac...
How to remove trailing whitespaces with sed?
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hm. its also buggy in the sense that it will remove all trailing "t"s :)
– Good Person
Aug 1 '14 at 2:30
2
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Recommended way to save uploaded files in a servlet application
...e server's work folder get synced with last updates (this is in IDE terms called "publishing"). This is the main cause of the problem you're seeing.
In real world code there are circumstances where storing uploaded files in the webapp's deploy folder will not work at all. Some servers do (either by...