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Predicate in Java
...ich uses Predicate in Java. I have never used Predicate . Can someone guide me to any tutorial or conceptual explanation of Predicate and its implementation in Java?
...
What is the apply function in Scala?
...t works the other way too - every object can be treated as a function, provided it has the apply method. Such objects can be used in the function notation:
// we will be able to use this object as a function, as well as an object
object Foo {
var y = 5
def apply (x: Int) = x + y
}
Foo (1) // ...
Recommended date format for REST GET API
...ou URI) and (human) addressability is not as important, you could also consider epoch time (e.g. http://example.com/start/1331162374). The URL looks a little cleaner, but you certainly lose readability.
The /2012/03/07 is another format you see a lot. You could expand upon that I suppose. If you ...
Efficient evaluation of a function at every cell of a NumPy array
...
I am afraid that the vectorized function cannot be faster than the "manual" double loop iteration and assignment through all the array elements. Especially, because it stores the result to a newly created variable (and not directly to...
Why is rbindlist “better” than rbind?
...get in a muddle of rownames using do.call(rbind, list(...))
see
How to avoid renaming of rows when using rbind inside do.call?
Memory efficiency
In terms of memory rbindlist is implemented in C, so is memory efficient, it uses setattr to set attributes by reference
rbind.data.frame is implemen...
Cleanest and most Pythonic way to get tomorrow's date?
... of the week that March 3rd, 2055 will land on.
– David Woods
Mar 4 '13 at 14:04
1
@DavidWoods: l...
How to create a density plot in matplotlib?
...you generated with R. This is because gaussian_kde tries to infer the bandwidth automatically. You can play with the bandwidth in a way by changing the function covariance_factor of the gaussian_kde class. First, here is what you get without changing that function:
However, if I use the following...
Can git automatically switch between spaces and tabs?
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
What exactly is Python's file.flush() doing?
...uage that you're programming against and is meant to speed things up by avoiding system calls for every write. Instead, when you write to a file object, you write into its buffer, and whenever the buffer fills up, the data is written to the actual file using system calls.
However, due to the operat...
What is the difference between include and extend in Ruby?
...
What you have said is correct. However there is more to it than that.
If you have a class Klazz and module Mod, including Mod in Klazz gives instances of Klazz access to Mod's methods. Or you can extend Klazz with Mod giving the class Klazz...