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How can you set class attributes from variable arguments (kwargs) in python
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Yet another variant based on the excellent answers by mmj and fqxp. What if we want to
Avoid hardcoding a list of allowed attributes
Directly and explicitly set default values for each attributes in the constructor
Restrict kwargs to predefine...
What is “String args[]”? parameter in main method Java
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The following answer is based my understanding & some test.
What is String[] args?
Ans- >
String[] -> As We know this is a simple String array.
args -> is the name of an array it can be anything (e.g. a, ar, argument, param, par...
How to get an enum value from a string value in Java?
...I use:
/**
* A common method for all enums since they can't have another base class
* @param <T> Enum type
* @param c enum type. All enums must be all caps.
* @param string case insensitive
* @return corresponding enum, or null
*/
public static <T extends Enum<T>> T getEnumF...
psql: FATAL: Ident authentication failed for user “postgres”
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You're getting this error because you're failing client authentication. Based on the error message, you probably have the default postgres configuration, which sets client authentication method to "IDENT" for all PostgreSQL connections.
You should definitely read section 19.1 Client Authenticati...
How can I add or update a query string parameter?
...h another that I found to replace/update/remove the querystring parameters based on the users input and taking the urls anchor into consideration.
Not supplying a value will remove the parameter, supplying one will add/update the parameter. If no URL is supplied, it will be grabbed from window.loca...
Can I install the “app store” in an IOS simulator?
... The link here and in the comments on WrightsCS answer all go to the base "Simulator Help" page now, so pretty much not helpful.
– Dale
Mar 10 '19 at 17:58
add a comment...
What does rake db:test:prepare actually do?
...t and updates db/schema.rb. The rake
db:test:load recreates the test database from the current
db/schema.rb. On subsequent attempts, it is a good idea to first run
db:test:prepare, as it first checks for pending migrations and warns
you appropriately.
-- http://guides.rubyonrails.org/testi...
How to run a program without an operating system?
...n:
an x86 Lenovo Thinkpad T430 laptop with UEFI BIOS 1.16 firmware
an ARM-based Raspberry Pi 3
We will also try them out on the QEMU emulator as much as possible, as that is safer and more convenient for development. The QEMU tests have been on an Ubuntu 18.04 host with the pre-packaged QEMU 2.11....
Connecting to TCP Socket from browser using javascript
...ble page connects to the WS server using JS.
Repeat step 3, but for the JS-based page
The JS-based page sends a command to the server, including to which bridge it must go.
The server forwards the command to the bridge.
The bridge opens a TCP/IP socket and interacts with it (sends a message, gets a ...
Complex CSS selector for parent of active child [duplicate]
Is there a way to select a parent element based on the class of a child element in the class? The example that is relevant to me relating to HTML output by a nice menu plugin for http://drupal.org . The output renders like this:
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