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What's the difference between ConcurrentHashMap and Collections.synchronizedMap(Map)?
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Please also note that the ConcurrentHashMap does not allow null keys or values. So they are NOT equal alternatives of a synchronized map.
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Is it ok to use dashes in Python files when trying to import them?
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One other thing to note in your code is that import is not a function. So import(python-code)...
Why would I use Scala/Lift over Java/Spring? [closed]
...evented Lift from being a solution in my case. I ended up selecting http://www.playframework.org/ and have been very pleased. Play has been stable and reliable so far and very easy to work with.
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Remove rows with all or some NAs (missing values) in data.frame
...mptions --------------------
fakeData <- function(m, n, p){
set.seed(123)
m <- matrix(runif(m*n), nrow=m, ncol=n)
m[m<p] <- NA
return(m)
}
df <- cbind( data.frame(id = paste0('ID',seq(row_size)),
stringsAsFactors = FALSE),
data.frame(fak...
How do I print a double value without scientific notation using Java?
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You could use printf() with %f:
double dexp = 12345678;
System.out.printf("dexp: %f\n", dexp)...
Protecting Java Source Code From Being Accessed [closed]
...ou're seeking. (I included the others first b/c they're easy, they're more fun and will probably work.)
This Wikipedia article might help your instructor understand your evidence and the external links section has many providers, including free ones. I'd run test files through free ones for a few da...
Why implement interface explicitly?
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Michael BMichael B
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Accessing an array out of bounds gives no error, why?
...(although it does not forbid it either). A vector also has the at() member function which is guaranteed to perform bounds-checking. So in C++, you get the best of both worlds if you use a vector. You get array-like performance without bounds-checking, and you get the ability to use bounds-checked ac...
Where do I find the definition of size_t?
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From Wikipedia
The stdlib.h and stddef.h header files define a datatype called size_t1 which ...
Using SSH keys inside docker container
I have an app that executes various fun stuff with Git (like running git clone & git push) and I'm trying to docker-ize it.
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