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What exactly does the enable-background attribute do?
...ground image available to child elements of the element it's specified on for things like filter effects that blend content with the background. There may be other uses, but that's the one I know.
If you don't have it set, then technically the element can't use backgrounds created by ancestors.
The ...
How to count items in JSON object using command line?
...in the mix...
Try jq, a lightweight and flexible command-line JSON processor:
jq length /tmp/test.json
Prints the length of the array of objects.
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Pip freeze vs. pip list
...$ pip install -r requirements.txt
The packages need to be in a specific format for pip to understand, which is
feedparser==5.1.3
wsgiref==0.1.2
django==1.4.2
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That is the "requirements format".
Here, django==1.4.2 implies install django version 1.4.2 (even though the latest is 1.6.x).
If y...
What's the absurd function in Data.Void useful for?
...the following signature, where Void is the logically uninhabited type exported by that package:
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How is performance affected by an unused using directive?
Visual Studio will automatically create using statements for you whenever you create a new page or project. Some of these you will never use.
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Pull request vs Merge request
...l request" feature. Both are means of pulling changes from another branch or fork into your branch and merging the changes with your existing code. They are useful tools for code review and change management.
An article from GitLab discusses the differences in naming the feature:
Merge or pull...
What is difference between CrudRepository and JpaRepository interfaces in Spring Data JPA?
What is the difference between CrudRepository and JpaRepository interfaces in Spring Data JPA ?
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nginx upload client_max_body_size issue
I'm running nginx/ruby-on-rails and I have a simple multipart form to upload files.
Everything works fine until I decide to restrict the maximum size of files I want uploaded.
To do that, I set the nginx client_max_body_size to 1m (1MB) and expect a HTTP 413 (Request Entity Too Large) status in...
Getting a 'source: not found' error when using source in a bash script
...on of broken scripts in Ubuntu some years ago (IIRC).
The source builtin works just fine in bash; but you might as well just use dot like Norman suggested.
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Undoing accidental git stash pop
I stashed some local changes before doing a complicated merge, did the merge, then stupidly forgot to commit before running git stash pop . The pop created some problems (bad method calls in a big codebase) that are proving hard to track down. I ran git stash show , so I at least know which file...