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Java: Static Class?
... but it provides insurance in case the constructor is accidentally invoked from within the class. It guarantees that the class will never be instantiated under any circumstances. This idiom is mildly counterintuitive, as the constructor is provided expressly so that it cannot be invoked. It is there...
What is difference between functional and imperative programming languages?
...1 + number2 + number3;
Each statement changes the state of the program, from assigning values to each variable to the final addition of those values. Using a sequence of five statements the program is explicitly told how to add the numbers 5, 10 and 15 together.
Functional languages:
The functio...
How to prevent going back to the previous activity?
...BACK button is pressed on the phone, I want to prevent a specific activity from returning to its previous one.
13 Answers
...
CURL to access a page that requires a login from a different page
...
My answer is a mod of some prior answers from @JoeMills and @user.
Get a cURL command to log into server:
Load login page for website and open Network pane of Developer Tools
In firefox, right click page, choose 'Inspect Element (Q)' and click on Network tab
Go...
What are the differences between the urllib, urllib2, urllib3 and requests module?
...p.text
This is just the tip of the iceberg. This is the list of features from the requests site:
International Domains and URLs
Keep-Alive & Connection Pooling
Sessions with Cookie Persistence
Browser-style SSL Verification
Basic/Digest Authentication
Elegant Key/Value Cookies
Automatic Deco...
Retrieving a random item from ArrayList [duplicate]
...
You must remove the system.out.println message from below the return, like this:
public Item anyItem()
{
randomGenerator = new Random();
int index = randomGenerator.nextInt(catalogue.size());
Item it = catalogue.get(index);
System.out.println("Managers ch...
How to use git merge --squash?
...aster
git merge --squash bugfix
git commit
This will take all the commits from the bugfix branch, squash them into 1 commit, and merge it with your master branch.
Explanation:
git checkout master
Switches to your master branch.
git merge --squash bugfix
Takes all commits from the bugfix branch a...
403 Forbidden vs 401 Unauthorized HTTP responses
...
A clear explanation from Daniel Irvine:
There's a problem with 401 Unauthorized, the HTTP status code for authentication errors. And that’s just it: it’s for authentication, not authorization.
Receiving a 401 response is the server tel...
How to get the client IP address in PHP [duplicate]
...
Whatever you do, make sure not to trust data sent from the client. $_SERVER['REMOTE_ADDR'] contains the real IP address of the connecting party. That is the most reliable value you can find.
However, they can be behind a proxy server in which case the proxy may have set th...
Still Reachable Leak detected by Valgrind
...an cause. For instance, there is normally no potential for heap exhaustion from "still reachable" blocks. This is because these blocks are usually one-time allocations, references to which are kept throughout the duration of the process's lifetime. While you could go through and ensure that your pro...