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Converting from longitude\latitude to Cartesian coordinates
...ch checkout the "Vincenty Formula."
I understand where starblue is coming from, but good software engineering is often about trade offs, so it all depends on the accuracy you require for what you are doing. For example, the result calculated from "Manhattan Distance Formula" versus the result fro...
How to send an object from one Android Activity to another using Intents?
...s native serialization, but it's way faster (and I mean way, WAY faster).
From the docs, a simple example for how to implement is:
// simple class that just has one member property as an example
public class MyParcelable implements Parcelable {
private int mData;
/* everything below here ...
Difference between break and continue statement
...reak
You can label a block, not only a for-loop, and then break/continue from a nested block to an outer one. In few cases this might be useful, but in general you'll try to avoid such code, except the logic of the program is much better to understand than in the following example:
first:
for (in...
RuntimeWarning: DateTimeField received a naive datetime
...to the model. Here's how a timezone-aware object looks like:
>>> from django.utils import timezone
>>> import pytz
>>> timezone.now()
datetime.datetime(2013, 11, 20, 20, 8, 7, 127325, tzinfo=pytz.UTC)
And here's a naive object:
>>> from datetime import datetim...
How to read from a file or STDIN in Bash?
The following Perl script ( my.pl ) can read from either the file on the command line args or from STDIN:
15 Answers
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What is the difference between an interface and abstract class?
...e more expensive to use, because there is a look-up to do when you inherit from them.
Abstract classes look a lot like interfaces, but they have something more: You can define a behavior for them. It's more about a person saying, "these classes should look like that, and they have that in common, s...
How can I connect to Android with ADB over TCP? [closed]
...ing in Hyper-V , and so I cannot connect directly via USB in the guest or from the host.
37 Answers
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How to install pip with Python 3?
...nd Ubuntu (Trusty Tahr and newer) for Python 2.x
Run the following command from a terminal:
sudo apt-get install python-pip
Installing on Debian (Wheezy and newer) and Ubuntu (Trusty Tahr and newer) for Python 3.x
Run the following command from a terminal:
sudo apt-get install python3-pip
Note:
O...
Git cherry pick vs rebase
...f less obvious use.)
git cherry-pick is for bringing an interesting commit from one line of development to another. A classic example is backporting a security fix made on an unstable development branch to a stable (maintenance) branch, where a merge makes no sense, as it would bring a whole lot of...
What's the right OAuth 2.0 flow for a mobile app
...52
Consider the following options
Implicit
Should I use implicit?
To quote from Section 8.2 https://tools.ietf.org/html/rfc8252#section-8.2
The OAuth 2.0 implicit grant authorization flow (defined in Section 4.2 of OAuth 2.0 [RFC6749]) generally works with the practice of performing the authorizati...