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R.exe, Rcmd.exe, Rscript.exe and Rterm.exe: what's the difference?
...t it is provided for backwards compatibility.
Rterm.exe is also a holdover from the days when Rcmd.exe was used. Can be ignored these days.
R CMD BATCH is a crutch that was needed in the days before littler and Rscript.exe, and similarly lingering from old docs and habits..
Rscript.exe is your frien...
“Collection was mutated while being enumerated” on executeFetchRequest
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OK, I think I've solved my problem and I must thank this blog post from Fred McCann's :
http://www.duckrowing.com/2010/03/11/using-core-data-on-multiple-threads/
The problem seems to come from the fact that I instantiate my background moc on the main thread instead of the background thread...
Disable VS' “downloading public symbols”
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You can do this from the Symbols option page
Tools → Options
Go To Debugging → Symbols
Uncheck all of the listed symbol file locations
Also you may want to disable "Enable .net framework source stepping" in Tools → Options → Debu...
HttpServletRequest get JSON POST data [duplicate]
...ream, you need to use a custom decoder that can process the raw datastream from:
BufferedReader reader = request.getReader();
Json post processing example (uses org.json package )
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException ...
What is $@ in Bash? [duplicate]
...them is not allowed.
* Expands to the positional parameters, starting from one. When the expansion occurs within double quotes, it expands to a single word with the value of each parameter separated by the first character of the IFS special variable. That is, "$*" is equivalent to "$1c...
Transition of background-color
...a:hover it will fade back to the original color when your mouse moves away from the link.
This might come in handy, too: CSS Fundamentals: CSS 3 Transitions
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How to convert .crt to .pem [duplicate]
...ce the default -inform is PEM, this is just doing an in->out conversion from PEM to PEM. The main different might be in potential text headers around the actual cert. Most of the time .crt are in PEM format anyway, but sometimes they're in DER format (the conventions are not always well establish...
CSS submit button weird rendering on iPad/iPhone
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Brilliant, and here is a great article about it from CSS tricks. It lists all the other elements changed by WebKit and Mozilla.
– Patrick
Jun 6 '13 at 11:25
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How to always show scrollbar
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There are 2 ways:
from Java code: ScrollView.setScrollbarFadingEnabled(false);
from XML code: android:fadeScrollbars="false"
Simple as that!
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Reading and writing environment variables in Python? [duplicate]
... I try this approach in mac os, the environment variables aren't available from the shell. only python can read the environment variables set this way.
– openCivilisation
Mar 16 '19 at 9:47
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