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What is the difference between a string and a byte string?
...le:
If you want to store music, you must first encode it using MP3, WAV, etc.
If you want to store a picture, you must first encode it using PNG, JPEG, etc.
If you want to store text, you must first encode it using ASCII, UTF-8, etc.
MP3, WAV, PNG, JPEG, ASCII and UTF-8 are examples of encoding...
What is the difference between “pom” type dependency with scope “import” and without “import”?
...f your POM (and all of its child POMs) without having to include a version etc.
However if in your POM you simply define a normal dependency to other-pom-artifact-id then all dependencies from the dependency section of the other-pom-artifact-id are included transitively in your project - however th...
Trying to start a service on boot on Android
...r>
</receiver>
(you don't need the android:enabled, exported, etc., attributes: the Android defaults are correct)
In MyBroadcastReceiver.java:
package com.example;
public class MyBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, In...
Proper way to use **kwargs in Python
...(**kwargs):
foo = kwargs.pop('foo')
bar = kwargs.pop('bar')
...etc...
is "the same as"
def f(foo=None, bar=None, **kwargs):
...etc...
this is not true. In the latter case, f can be called as f(23, 42), while the former case accepts named arguments only -- no positional calls. ...
When should you not use virtual destructors?
...e ability for a class to perform cleanup (e.g. delete memory, close files, etc...) AND also ensures the constructors of all its members gets called.
– user48956
May 12 '11 at 0:14
...
How to drop a PostgreSQL database if there are active connections to it?
... all postgresql processes that are running by tying this command
sudo /etc/init.d/postgresql restart
type the command
bg to check if other postgresql processes are still running
then followed by dropdb dbname to drop the database
sudo /etc/init.d/postgresql restart
bg
dropdb dbname
Thi...
How to solve error “Missing `secret_key_base` for 'production' environment” (Rails 4.1)
...server
If you login as the root user, find this file and edit it:
$ vi /etc/profile
Go to the bottom of the file using Shift+G (capital "G") in vi.
Write your environment variable with the GENERATED_CODE, pressing i to insert in vi. Be sure to be in a new line at the end of the file:
$ export...
Representational state transfer (REST) and Simple Object Access Protocol (SOAP)
...ed web browsers for years and we have seen how easy, flexible, performing, etc web sites are. HTML sites use hyperlinks and forms as the primary means of user interaction. Their main goal is to allow us, clients, to know only those links that we can use in the current state. And REST simply says 'wh...
Are multiple `.gitignore`s frowned on?
...single asterisk) in that directory and it will never show up in git status etc.
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Singular or plural controller and helper names in Rails
... controllers that are tied directly to a specific model: User -> Users, etc.), but you can use whatever you want.
As for helpers, all helpers are available for all controllers by default, so technically, how you name your helpers doesn't matter at all. It's just another convention to keep a cont...