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What's the difference between ConcurrentHashMap and Collections.synchronizedMap(Map)?
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123
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)...
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...
HTTP status code for update and delete?
...atus code is the request sent by the client is valid (DELETE mySite/entity/123) and the entity to delete does not exist.
– Martin
Dec 30 '11 at 21:27
69
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How do I print a double value without scientific notation using Java?
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123
You could use printf() with %f:
double dexp = 12345678;
System.out.printf("dexp: %f\n", dexp)...
Why implement interface explicitly?
...
Michael BMichael B
7,21233 gold badges2424 silver badges5252 bronze badges
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Unicode character as bullet for list-item in CSS
...n will have to use the li:before solution.
– CoderGuy123
Sep 8 '16 at 11:03
1
Works. Welcome to t...
Where do I find the definition of size_t?
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123
From Wikipedia
The stdlib.h and stddef.h header files define a datatype called size_t1 which ...
How to send objects through bundle
...lication = (CustomApplication)getApplication();
application.someVariable = 123;
Hope that helps.
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