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NodeJS - What does “socket hang up” actually mean?
...er/proxy
When you, as a server, perhaps a proxy server, receive a request from a client, then start acting upon it (or relay the request to the upstream server), and before you have prepared the response, the client decides to cancel/abort the request.
This stack trace shows what happens when a cl...
Does JSON syntax allow duplicate keys in an object?
...
From the standard (p. ii):
It is expected that other standards will refer to this one, strictly adhering to the JSON text format, while
imposing restrictions on various encoding details. Such standards may require spec...
Why would a static nested interface be used in Java?
...t code which cannot access Foo will not be able to access Foo.Bar either. (From source code - bytecode or reflection can access Foo.Bar even if Foo is package-private!)
It is acceptable style to create a nested interface this way if you expect it to be used only from the outer class, so that you do...
How to evaluate http response codes from bash/shell script?
...ER"
else
exit 0
fi
This will send an email alert on every state change from 200, so it's dumb and potentially greedy. To improve this, I would look at looping through several status codes and performing different actions dependant on the result.
...
Why does this C++ snippet compile (non-void function does not return a value) [duplicate]
...
This is undefined behavior from the C++11 draft standard section 6.6.3 The return statement paragraph 2 which says:
[...] Flowing off the end of a function is equivalent to a return with no value; this results in undefined behavior in a value-retur...
How to add one day to a date? [duplicate]
...API (which is inspired by Joda-Time):
Date dt = new Date();
LocalDateTime.from(dt.toInstant()).plusDays(1);
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Easy way to write contents of a Java InputStream to an OutputStream
...eption
As the documentation states, transferTo will:
Reads all bytes from this input stream and writes the bytes to the
given output stream in the order that they are read. On return, this
input stream will be at end of stream. This method does not close
either stream.
This method ...
iOS - Calling App Delegate method from ViewController
...rk some way, but what if I want to use a method like visibleViewController from it? It'll give error like this: Property 'visibleViewController' not found on object of type 'NSObject<UIApplicationDelegate> *. any solution for this?
– mgyky
Nov 20 '18 at 1...
What is Normalisation (or Normalization)?
...r, leading to data corruption.
There is a number of normalization levels from 1. normal form through 5. normal form. Each normal form describes how to get rid of some specific problem, usually related to redundancy.
Some typical normalization errors:
(1) Having more than one value in a cell. Exa...
Iterating through a range of dates in Python
...unction to completely hide/abstract the iteration over the range of dates:
from datetime import timedelta, date
def daterange(start_date, end_date):
for n in range(int((end_date - start_date).days)):
yield start_date + timedelta(n)
start_date = date(2013, 1, 1)
end_date = date(2015, 6,...