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Equivalent of “throw” in R
How does one "throw" an error in R? I have a function that takes a data frame and some column names and does stuff with them. If the columns don't exist, I want the function to stop and to stop all functions depending on it.
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Changing the background drawable of the searchview widget
...decides to reimplement internals of SearchView and element with above-mentioned id is not present - the code won't work.
In SDK, the background for text field in SearchView is declared through nine-patches, so we'll do it the same way. You can find original png images in drawable-mdpi directory of ...
Is there an online name demangler for C++? [closed]
...
This one worked for me, but not the one in the more popular answer: _ZN9cdnalizer11rewriteHTMLINS_6apache8IteratorEcEET_RKSsRKNS_6ConfigES3_S3_St8functionIFS3_RKS3_SB_EES9_IFvSsEE
– matiu
Dec...
Drop all the tables, stored procedures, triggers, constraints and all the dependencies in one sql st
...eting stored procedures, triggers, constraints and all the dependencies in one SQL statement?
21 Answers
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Quickly find whether a value is present in a C array?
...roll the loop. Here's a way to do it which incorporates the 3 ideas I mentioned in my comment: Loop unrolling, cache prefetch and making use of the multiple load (ldm) instruction. The instruction cycle count comes out to about 3 clocks per array element, but this doesn't take into account memory de...
Should I use JSLint or JSHint JavaScript validation? [closed]
...ionally be cases where a linter will complain about something that you've done intentionally -- for example, you know that you should always use === but just this one time you have a good reason to use ==. But even then, with ESLint you have the option to specify eslint-disable around the line in qu...
How do I remove a submodule?
...iling slash)
# or, if you want to leave it in your working tree and have done step 0
3. git rm --cached a/submodule
3bis mv a/submodule_tmp a/submodule
Explanation
rm -rf: This is mentioned in Daniel Schroeder's answer, and summarized by Eonil in the comments:
This leaves .git/modules/<...
Scala: Abstract types vs generics
... can abstract over them.
And what we get conceptually is that we can model one in terms of the other. At least in principle, we can express every sort of parameterization as a form of object-oriented abstraction. So in a sense you could say Scala is a more orthogonal and complete language.
Why?
Wh...
XDocument or XmlDocument
... I can't find something useful, could you please tell me why you would use one over another ?
7 Answers
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When to use Common Table Expression (CTE)
...ould need to use them. They would seem to be redundant as the same can be done with derived tables. Is there something I am missing or not understanding well? Can someone give me a simple example of limitations with regular select, derived or temp table queries to make the case of CTE? Any simple ex...