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SVN upgrade working copy

...ion client to at least 1.7. With the command line client, you have to manually upgrade your working copy format by issuing the command svn upgrade: Upgrading the Working Copy Subversion 1.7 introduces substantial changes to the working copy format. In previous releases of Subversion, Sub...
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Pass all variables from one shell script to another?

... You have basically two options: Make the variable an environment variable (export TESTVARIABLE) before executing the 2nd script. Source the 2nd script, i.e. . test2.sh and it will run in the same shell. This would let you share more comp...
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Change R default library path using .libPaths in Rprofile.site fails to work

I am running R on Windows, not as an administrator. When I install a package, the following command doesn't work: 15 Answer...
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How does the ThreadStatic attribute work?

... Is there any way to cover all the cases (multi-threading, web app multi-threading with async/await, etc) so that a single piece of work (e.g. a single web request, the processing of a single queue message, etc) get its own version of the variable, no ...
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What can be the reasons of connection refused errors?

...estination machine, but its backlog of pending connections is full. A firewall between the client and server is blocking access (also check local firewalls). After checking for firewalls and that the port is open, use telnet to connect to the ip/port to test connectivity. This removes any potentia...
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Why cast unused return values to void?

...nce using the full static cast notation just feels like overkill here. Finally, if you're reviewing a coding standard or writing one, then it's also a good idea to explicitly state that calls to overloaded operators (not using function call notation) should be exempt from this too: class A {}; A o...
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asynchronous vs non-blocking

What is the difference between asynchronous and non-blocking calls? Also between blocking and synchronous calls (with examples please)? ...
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Difference between ProcessBuilder and Runtime.exec()

... arguments obtained are then joined up into a string that is passed to the OS to execute. So, for example, on Windows, Runtime.getRuntime().exec("C:\DoStuff.exe -arg1 -arg2"); will run a DoStuff.exe program with the two given arguments. In this case, the command-line gets tokenised and put back...
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Android and   in TextView

... In Kotlin, it works very well. I replace all the empty spaces with this, and it will ellipsize from the last characters. str.replace(" ", "\u00A0") yields, "Hello wor..." instead of "Hello..." – Seop Yoon Feb 23 '18 at 2:27 ...
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When to use AtomicReference in Java?

...ke the key to needing this is because you need to do a "compareAndSet". If all I needed to do was set I wouldn't need the AtomicObject at all because of reference updates themselves being atomic? – sMoZely Jan 20 '13 at 21:46 ...