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Refresh image with a new one at the same url
I am accessing a link on my site that will provide a new image each time it is accessed.
19 Answers
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What is an index in SQL?
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An index is used to speed up searching in the database. MySQL have some good documentation on the subject (which is relevant for other SQL servers as well):
http://dev.mysql.com/doc/refman/5.0/en/mysql-indexes.html
An index can be used to efficiently find all rows matching some column in your...
What are some good Python ORM solutions? [closed]
...r) that talks to a Python web service on the back-end. So, I really need something fast and lightweight on the back-end that I can implement using Python that then speaks to the PostgreSQL DB via an ORM (JSON to the browser).
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Is it better practice to use String.format over string Concatenation in Java?
...app being localisable you should also get into the habit of specifying argument positions for your format tokens as well:
"Hello %1$s the time is %2$t"
This can then be localised and have the name and time tokens swapped without requiring a recompile of the executable to account for the different...
Open the file in universal-newline mode using the CSV Django module
...Python using the csv module. It's working on Windows, but on Mac it gave me this:
1 Answer
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Listing only directories using ls in Bash?
...stricts it to directories). Similarly, to list all subdirectories under /home/alice/Documents, use ls -d /home/alice/Documents/*/
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Is it .yaml or .yml?
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The nature and even existence of file extensions is platform-dependent (some obscure platforms don't even have them, remember) -- in other systems they're only conventional (UNIX and its ilk), while in still others they have definite semantics and in some cases specific limits on length or characte...
css z-index lost after webkit transform translate3d
I have two absolutely positioned div elements that overlap. Both have set z-index values via css. I use the translate3d webkit transform to animate these elements off the screen, and then back onto the screen. After the transform, the elements no longer respect their set z-index values.
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View differences of branches with meld?
I know that I can view the difference between HEAD and current state with meld . . But how can I view the differences between branches, for example master and devel with meld?
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How can I add the new “Floating Action Button” between two widgets/layouts
...u don't hardcode any layout_height or margin values, which could vary in time or be defined dynamically. Hugh's answer could work in some simple cases, and perhaps could be a workaround for some third-party libraries that don't fully support CoordinatorLayout and layout_anchor and layout_anchorGravi...