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Check if directory mounted with bash

... Running the mount command without arguments will tell you the current mounts. From a shell script, you can check for the mount point with grep and an if-statement: if mount | grep /mnt/md0 > /dev/null; then echo "yay" else echo "nay" ...
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Wrapping null-returning method in Java with Option in Scala?

...ause Try is not about nullability checking but just a way to functionally handle exceptions. Using Try to catch an exception and converting that to an Option for convenience will only show None in case an exception happens. scala> Try(1/0).toOption res11: Option[Int] = None You want to preser...
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Difference between objectForKey and valueForKey?

What is the difference between objectForKey and valueForKey ? I looked both up in the documentation and they seemed the same to me. ...
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“Invalid signature file” when attempting to run a .jar

My java program is packaged in a jar file and makes use of an external jar library, bouncy castle . My code compiles fine, but running the jar leads to the following error: ...
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Difference between app.all('*') and app.use('/')

Is there a useful difference between app.all('*', ... ) and app.use('/', ...) in Node.JS Express? 7 Answers ...
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Check if list contains element that contains a string and get that element

...n into similar ones utilizing LINQ but I haven't been able to fully understand them (and thus, implement them), as I'm not familiarized with it. What I would like to, basically, is this: ...
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multiple prints on the same line in Python

... This doesn't work if you have both prints and a time consuming action in between (all in the same function / indentation level). Before the action starts, there is no output at all and after it is finished the output appears as whole – Paddre ...
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How Do I 'git fetch' and 'git merge' from a Remote Tracking Branch (like 'git pull')

... Sure. If I've added a remote repository with 1000 branches to mine, and I ask what branches the remote has, it damn well better give me all 1000 – Gareth Jun 11 '10 at 19:14 ...
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What's the difference between “declare class” and “interface” in TypeScript

...eScript, when creating .d.ts source declaration files, which is preferable and why? 4 Answers ...
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Visual Studio C# statement collapsing

... 2012 (@MSDN) C# outline 2013 (@MSDN) C# outline 2015 (@MSDN) Visual Basic and C# Outliner The last extension supports only VS 2015 and VS 2017, but it's the most powerful one. It supports syntax coloring inside collapsed blocks, it is more fault-tolerant and optimized. If the extension doesn'...