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How to get the current date/time in Java [duplicate]
...milliseconds after the UNIX epoch (as a Java long). This value is a delta from a UTC time-point, and is independent of the local time-zone ... assuming that the system clock has been set correctly.
If you want the date / time in a form that allows you to access the components (year, month, etc) num...
C++ “virtual” keyword for functions in derived classes. Is it necessary?
...explicitly, so you may want to use it if only to keep the compiler quiet.
From a purely stylistic point-of-view, including the virtual keyword clearly 'advertises' the fact to the user that the function is virtual. This will be important to anyone further sub-classing B without having to check A'...
How to drop into REPL (Read, Eval, Print, Loop) from Python code
...PL at an arbitrary point in its execution, even if the script was launched from the command line?
6 Answers
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What is the meaning and difference between subject, user and principal?
...deterministic fashion, "user" is the right word.
Subject/Object inherits from the same terms as used in grammar. In a sentence the subject is the actor and the object is the thing acted on. In this sense the use has been around since before computers were invented. In a security context, a subj...
How to convert an NSTimeInterval (seconds) into minutes
I've got an amount of seconds that passed from a certain event. It's stored in a NSTimeInterval data type.
12 Answers
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Sending websocket ping/pong frame from browser
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Ping is meant to be sent only from server to client, and browser should answer as soon as possible with Pong OpCode, automatically. So you have not to worry about that on higher level.
Although that not all browsers support standard as they suppose to, t...
how to convert an RGB image to numpy array?
...ng Library) and Numpy work well together.
I use the following functions.
from PIL import Image
import numpy as np
def load_image( infilename ) :
img = Image.open( infilename )
img.load()
data = np.asarray( img, dtype="int32" )
return data
def save_image( npdata, outfilename ) :
...
Why is exception handling bad?
... It will make sure you release resources on a throw, but doesn't free you from having to think about corruption of object state and callers seeing intermediate values. So, for a lot of people, it's easier to say, by fiat of coding style, no exceptions. If you restrict the kind of code you write, ...
What is the difference between Hibernate and Spring Data JPA
...nce api which provide specification for persisting, reading, managing data from your java object to relations in database.
Hibernate: There are various provider which implement jpa. Hibernate is one of them. So we have other provider as well. But if using jpa with spring it allows you to switch to d...
Javascript foreach loop on associative array object
... @ceving, can you explain more on why not use var in loops? I come from C++/PHP background and I don't understand this. scoping does exist in the loop, but temporary, so I am not sure what you mean.
– Dennis
Jul 21 '16 at 21:33
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