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Test if a command outputs an empty string
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Undo a Git merge that hasn't been pushed yet
Within my master branch, I did a git merge some-other-branch locally, but never pushed the changes to origin master. I didn't mean to merge, so I'd like to undo it. When doing a git status after my merge, I was getting this message:
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Sending Email in Android using JavaMail API without using the default/built-in app
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How do I use reflection to call a generic method?
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Batch renaming files with Bash
How can Bash rename a series of packages to remove their version numbers? I've been toying around with both expr and %% , to no avail.
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How do you attach a new pull request to an existing issue on github?
I'm not sure, but I have a vague memory of creating a github pull request with "Issue 4" or something in the title, and it automatically attached itself to Issue 4 in the project that I was submitting it to. I tried it again recently and it didn't work -- it just created a brand new issue instead. I...
Is it possible to declare two variables of different types in a for loop?
Is it possible to declare two variables of different types in the initialization body of a for loop in C++?
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Determine if the device is a smartphone or tablet? [duplicate]
I would like to get info about a device to see if it's a smartphone or tablet. How can I do it?
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How can I delete a file from a Git repository?
...d "file1.txt" to a Git repository. After that, I committed it, added a couple of directories called dir1 and dir2 , and committed them to the Git repository.
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How does Facebook Sharer select Images and other metadata when sharing my URL?
When using Facebook Sharer, Facebook will offer the user the option of using 1 of a few images pulled from the source as a preview for their link. How are these images selected, and how can I ensure that any particular image on my page is always included in this list?
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