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data.table vs dplyr: can one do something well the other can't or does poorly?

... is easily generalised to other contexts: interactive web graphics, web scraping, gists, run-time contracts, ...) Memory and performance I've lumped these together, because, to me, they're not that important. Most R users work with well under 1 million rows of data, and dplyr is sufficiently fast ...
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How can I add a custom HTTP header to ajax request with js or jQuery?

...tting can be overwritten from within the beforeSend function. — http://api.jquery.com/jQuery.ajax/ share | improve this answer | follow | ...
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Difference between java.util.Random and java.security.SecureRandom

... real question here: if java can produce a more secure prng with a similar API, why didn't they just replace the broken one? – Joel Coehoorn Jun 22 '12 at 22:45 12 ...
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Scala vs. Groovy vs. Clojure [closed]

...lent Java class - types and all. As a case in point, the entire Akka Java API is written in Scala. So please explain what you mean by "can't integrate" here - because it reads like FUD to me. – Kevin Wright Mar 30 '15 at 14:41 ...
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Max retries exceeded with URL in requests

...ith python manage.py shell and am using session.get('http://localhost:8000/api/'). Any help? @Zulu – MwamiTovi Nov 23 '19 at 10:49 ...
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What is the difference between the HashMap and Map objects in Java?

... expose the specific map implementation to methods using the Map or via an API definition. share | improve this answer | follow | ...
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Unable to execute dex: GC overhead limit exceeded in Eclipse

...very time I click on an Android XML file in Eclipse, it loads data for all API versions and Unable to execute dex: GC overhead limit exceeded I found one more solution to resolve this problem other than increasing the VM values or downgrading to an older ADT version (22.6.2 or 23.2) Note: Some ...
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Why does flowing off the end of a non-void function without returning a value not produce a compiler

... System.exit() never returns. I looked it up (java.sun.com/j2se/1.4.2/docs/api/java/lang/…), and the docs just say it "never normally returns". I wonder what that means... – Paul Biggar Oct 23 '09 at 10:11 ...
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What is 'Currying'?

... that does pretty much exactly what you've explained here: prototypejs.org/api/function/curry – shuckster Aug 30 '09 at 2:26 ...
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How to use glOrtho() in OpenGL?

... popular choice for calculating such matrices. http://glm.g-truc.net/0.9.2/api/a00245.html documents both an ortho and frustum operations. share | improve this answer | follo...