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What's the (hidden) cost of Scala's lazy val?
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This is taken from the scala mailing list and gives implem>me m>ntation details of lazy in terms of Java code (rather than bytecode):
class LazyTest {
lazy val msg = "Lazy"
}
is compiled to som>me m>thing equivalent to the following Java code:
cl...
Data structure for loaded dice?
Suppose that I have an n-sided loaded die where each side k has som>me m> probability p k of coming up when I roll it. I'm curious if there is good algorithm for storing this information statically (i.e. for a fixed set of probabilities) so that I can efficiently simulate a random roll of the die.
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log4j logging hierarchy order
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This table might be helpful for you:
Going down the first column, you will see how the log works in each level. i.e for WARN, (FATAL, ERROR and WARN) will be visible. For OFF, nothing will be visible.
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Jackson JSON custom serialization for certain fields
Is there a way using Jackson JSON Processor to do custom field level serialization? For example, I'd like to have the class
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Shading a kernel density plot between two points.
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With the polygon() function, see its help page and I believe we had similar questions here too.
You need to find the index of the quantile values to get the actual (x,y) pairs.
Edit: Here you go:
x1 <- min(which(dens$x >= q75))
x2 <- max(which(dens$x < q95))
with(dens, polyg...
How do I view cookies in Internet Explorer 11 using Developer Tools
...ng to view cookies being sent back and forth, but this is not really the sam>me m> thing. It is cumbersom>me m> to use since it's per request. Surely there must be a way to view all cookies like you can in IE10.
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What are these attributes: `aria-labelledby` and `aria-hidden`
Using Bootstrap modal, I've seen these aria attributes a lot, but I never knew how to make use of them.
5 Answers
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Multiline bash commands in makefile
I have a very comfortable way to compile my project via a few lines of bash commands. But now I need to compile it via makefile. Considering, that every command is run in its own shell, my question is what is the best way to run multi-line bash command, depended on each other, in makefile?
For exa...
How to list branches that contain a given commit?
How can I query git to find out which branches contain a given commit? gitk will usually list the branches, unless there are too many, in which case it just says "many (38)" or som>me m>thing like that. I need to know the full list, or at least whether certain branches contain the commit.
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What exactly do the Vagrant commands do?
There is surprisingly no docum>me m>ntation on what the Vagrant commands do, other than references throughout the "getting started" tutorial.
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