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Change directory command in Docker?
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You can run a script, or a more complex parameter to the RUN. Here is an example from a Dockerfile I've downloaded to look at previously:
RUN cd /opt && unzip treeio.zip && mv treeio-master treeio && \
rm -f treeio.zip &&...
Comment out text in R Markdown (Rmd file)
In an R Markdown ( .Rmd ) file, how do you comment out unused text? I'm not referring to the text in the R code chunk, but the general texts, like % in LaTex for example.
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Embedding Base64 Images
...ers. IE supports embedding images since version 8 as well.
http://caniuse.com/#feat=datauri
Data URIs are now supported by the following web browsers:
Gecko-based, such as Firefox, SeaMonkey, XeroBank, Camino, Fennec and K-Meleon
Konqueror, via KDE's KIO slaves input/output system
Ope...
What is the difference between Linq to XML Descendants and Elements
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Ruby combining an array into one string
In Ruby is there a way to combine all array elements into one string?
3 Answers
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URL encode sees “&” (ampersand) as “&” HTML entity
...passed in a URL (via GET). But if I use escape , encodeURI or encodeURIComponent , & will be replaced with %26amp%3B , but I want it to be replaced with %26 . What am I doing wrong?
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Does a UNIQUE constraint automatically create an INDEX on the field(s)?
... customer you can see your unique keys are in fact B-tree type indexes.
A composite index on (email, user_id) is enough, you don't need a separate index on email only - MySQL can use leftmost parts of a composite index. There may be some border cases where the size of an index can slow down your qu...
Rails: Default sort order for a rails model?
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community wiki
23 revs, 4 users 82%Michael Durrant
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Window Height=“Auto” not working as expected
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community wiki
5 revs, 5 users 29%Muad'Dib
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Is putting a div inside an anchor ever correct?
...e is not XML-validatable. I think that DTD expresses the intentions of the committee pretty well, so I'd say: No.
– Carl Smotricz
Dec 1 '09 at 19:18
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