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How to check if AlarmManager already has an alarm set?

When my app starts, I want it to check if a particular alarm (registered via AlarmManager) is already set and running. Results from google seem to indicate that there is no way to do this. Is this still correct? I need to do this check in order to advise the user before any action is taken to create...
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How safe is it to store sessions with Redis?

I'm currently using MySql to store my sessions. It works great, but it is a bit slow. 3 Answers ...
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what's the correct way to send a file from REST web service to client?

I've just started to develop REST services, but I've come across a difficult situation: sending files from my REST service to my client. So far I've gotten the hang of how to send simple data types (strings, integers, etc) but sending a file is a different matter since there are so many file formats...
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Create a dictionary on a list with grouping

I have the following object in a list: 4 Answers 4 ...
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git status shows modifications, git checkout — doesn't remove them

I would like to remove all changes to my working copy. Running git status shows files modified. Nothing I do seems to remove these modifications. E.g.: ...
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The entity cannot be constructed in a LINQ to Entities query

There is an entity type called Product that is generated by entity framework. I have written this query 14 Answers ...
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Reverse Range in Swift

Is there a way to work with reverse ranges in Swift? 7 Answers 7 ...
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Cached, PHP generated Thumbnails load slowly

Question Part A ▉ (100 bountys, awarded) Main question was how to make this site, load faster. First we needed to read these waterfalls. Thanks all for your suggestions on the waterfall readout analysis. Evident from the various waterfall graphs shown here is the main bottleneck: the PHP-genera...
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How I can delete in VIM all text from current line to end of file?

I have very large files (more than 10Gb). I need only some lines from the top of the file. Is it possible (in vim) to delete the rest of the file (from current line to the end of file)? ...
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What does an underscore in front of an import statement mean?

I saw this example from sqlite3 on GitHub : 4 Answers 4 ...