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Understanding exactly when a data.table is a reference to (vs a copy of) another data.table
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Yes, it's subassignment in R using <- (or = or ->) that makes a copy of the whole object. You can trace that using tracemem(DT) and .Internal(inspect(DT)), as below. The data.table features := and set() assign by reference to whatever object they are passed. So...
AngularJS ngClass conditional
Is there any way to make an expression for something like ng-class to be a conditional?
11 Answers
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How can I make the tabs work normally on Xcode 4?
...code finally added tabs but the problem is that they behave very strange. For example they will keep a tab open only if it was opened to a new tab.
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How to articulate the difference between asynchronous and parallel programming?
Many platforms promote asynchrony and parallelism as means for improving responsiveness. I understand the difference generally, but often find it difficult to articulate in my own mind, as well as for others.
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Recommended way to get hostname in Java
Which of the following is the best and most portable way to get the hostname of the current computer in Java?
11 Answers
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Difference between JAX-WS, Axis2 and CXF
...into the JDK really is just the basic soap stuff. If you need any of the more complex WS-* things like WS-Security, WS-RM, WS-Policy, etc..., you need to use one of the alternatives like CXF or Metro or Axis2. It can also depend on what you are trying to integrate with. For example, CXF has top ...
Prevent errors from breaking / crashing gulp watch
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Your swallowError function should look like this:
function swallowError (error) {
// If you want details of the error in the console
console.log(error.toString())
this.emit('end')
}
I think you have to bind this function on the e...
Algorithm to compare two images
Given two different image files (in whatever format I choose), I need to write a program to predict the chance if one being the illegal copy of another. The author of the copy may do stuff like rotating, making negative, or adding trivial details (as well as changing the dimension of the image).
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How to remove unreferenced blobs from my git repo
...n something like these first, oh dear, git is complicated!!
git remote rm origin
rm -rf .git/refs/original/ .git/refs/remotes/ .git/*_HEAD .git/logs/
git for-each-ref --format="%(refname)" refs/original/ | xargs -n1 --no-run-if-empty git update-ref -d
You might also need to remove some tags, than...
XML schema or DTD for logback.xml?
...l discussions on the net about how great it would be to have an XML schema or DTD for logback.xml file to have at least the very basic validation and auto-completion in IDEs like IDEA or Eclipse, but I never saw any solution.
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