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How do servlets work? Instantiation, sessions, shared variables and multithreading
... will work on the requests from all other clients.
Why isn't it a good idea to have one instance per client? Think about this: Will you hire one pizza guy for every order that came? Do that and you'd be out of business in no time.
It comes with a small risk though. Remember: this single guy hol...
How to declare global variables in Android?
...ching your process. At the time Application is being created, you have no idea what your process is being created for. By lazily initializing singletons as needed, you only need to do work that is necessary. For example, if your process is being launched to handle a broadcast about some backgroun...
How to read a (static) file from inside a Python package?
...edError: Can't perform this operation for loaders without 'get_data()' any ideas?
– leoschet
Jun 29 '18 at 0:58
Note t...
public friend swap member function
...ever existed in a standard, but it was widely used before which is why the idea (and compiler support) tended to carry on, but it's technically not there. friend functions are only found by ADL, and if they need to just be free functions with friend access, they need to both be declared as friend wi...
What is “callback hell” and how and why does RX solve it?
...ing(i)
yield
myGen = myLoop()
This is not the full code but the idea is that the "yield" pauses our for loop until someone calls myGen.next(). The important thing is that we could still write the code using a for loop, without needing to turn out logic "inside out" like we had to do in th...
List of Delphi language features and version in which they were introduced/deprecated
...wiki to show me pages specific to older versions of Delphi (pre XE2)... no idea why! This is wonderful, and has been marked as the correct answer! Thanks!
– LaKraven
Dec 10 '11 at 21:59
...
REST vs JSON-RPC? [closed]
...lly is. REST is definitely not just a mapping of CRUD to HTTP methods. The idea that it is a problem to "add another method" clearly indicates that REST is misunderstood as RPC over HTTP, which it is not at all. Try reading Roy Fieldings blog or his dissertation - Google will help you find it - you ...
How can I prevent SQL injection in PHP?
...
@Alix this sounds like a good idea in theory, but sometimes the values need a different kind of escapes, for example for SQL and HTML
– p0358
Nov 18 '18 at 23:24
...
When to use std::forward to forward arguments?
... that the const function is called; and this then throws an exception (the idea being this was a locked account!)
If we have a non const account then we should be able to modify the account.
#include <iostream>
#include <string>
#include <sstream> // std::stringstream
#include &l...
Separate REST JSON API server and client? [closed]
...e Python. I use JsonRPC 2.0 instead of REST. I suggest REST, though I like idea of JsonRPC for various reasons. I use below libraries. Somebody considering option 2/3 might find it useful.
API Server: Python A fast web micro framework - Flask
Frontend server: Nginx
Client side MVC: Knockout.js
Oth...