Suzana K. SuzanaK

Enable PipeWire on Ubuntu 22.04

This guide is only for original Ubuntu out-of-the-box packages. If you have added a custom PPA like pipewire-debian, you might get into conflicts.

Ubuntu 22.04 has PipeWire partially installed and enabled as it's used by browsers (WebRTC) for recoding the screeen under Wayland. We can enable remaining parts and use PipeWire for audio and Bluetooth instead of PulseAudio.

Starting from WirePlumber version 0.4.8 automatic Bluetooth profile switching (e.g. switching from A2DP to HSP/HFP when an application needs microphone access) is supported. Jammy (22.04) repos provide exactly version 0.4.8. So, we're good.

Based on Debian Wiki, but simplified for Ubuntu 22.04.

Solr needs opinions, because Solr documentation gives you way too many options. It's hard to navigate the best practices for using Solr. Some of my opinions based on dozens of Solr projects :)

Prefer preloading static, classic config files over managed schema, config API, or schemaless

Schema files are a good thing. They are declarative, and not letting them change at runtime prevents all kinds of security issues. Further, classic schema / solrconfig support all of Solr's functionality and are well documented with tons of examples online in blog articles and stackoverflow. Using managed schema or the config API takes a lot of experimentation.

Static configurations can also be easily version controlled. As I've learned as a long time Elasticsearch user, this is one of Solr's advantages. Having an API for changing every underlying config option of your index means finding the code that made the change is rather time consuming.

Static configuration is also good separation of concerns. You cleanly separate

What the BookCorpus?

So in the midst of all these Sesame Streets characters and robots transforming automobile era of "contextualize" language models, there is this "Toronto Book Corpus" that points to this kinda recently influential paper:

Yukun Zhu, Ryan Kiros, Rich Zemel, Ruslan Salakhutdinov, Raquel Urtasun, Antonio Torralba, and Sanja Fidler. 2015. "Aligning books and movies: Towards story-like visual explanations by watching movies and reading books." In Proceedings of the IEEE international conference on computer vision, pp. 19-27.

Why do I even care, there's no translations there?

Some might know my personal pet peeve on collecting translation datasets but this BookCorpus has no translations, so why do I even care about it?

psql: FATAL: Peer authentication failed for user “postgres” (or any user)

The connection failed because by default psql connects over UNIX sockets using peer authentication, that requires the current UNIX user to have the same user name as psql. So you will have to create the UNIX user postgres and then login as postgres or use sudo -u postgres psql database-name for accessing the database (and psql should not ask for a password).

If you cannot or do not want to create the UNIX user, like if you just want to connect to your database for ad hoc queries, forcing a socket connection using psql --host=localhost --dbname=database-name --username=postgres (as pointed out by @meyerson answer) will solve your immediate problem.

But if you intend to force password authentication over Unix sockets instead of the peer method, try changing the following pg_hba.conf* line:

from

Using py.test is great and the support for test fixtures is pretty awesome. However, in order to share your fixtures across your entire module, py.test suggests you define all your fixtures within one single conftest.py file. This is impractical if you have a large quantity of fixtures -- for better organization and readibility, you would much rather define your fixtures across multiple, well-named files. But how do you do that? ...No one on the internet seemed to know.

Turns out, however, you can define fixtures in individual files like this:

tests/fixtures/add.py

import pytest

@pytest.fixture

Processing JSON using jq

jq is useful to slice, filter, map and transform structured json data.

Installing jq

On Mac OS

brew install jq

	package specs

	import geb.spock.GebReportingSpec

	class GebDemoSpec extends GebReportingSpec {

	def "Testing Basic Page Contents"(){
	setup:
	go "http://localhost:9000/#/demo/geb-demo"

	/**
	* Retrieves a list of all of the members on a Trello board and stores and
	* returns their names in an array. It will not include any duplicates.
	*
	* Trello names are usually represented as "Elliot Alderson (mrrobot)" but the
	* returned array will only return an array with their actual name (that is,
	* Ellio Alderson).
	*
	* This does not require jQuery or any third-party library to run. If you want
	* to run this from the console of Chrome, then paste this entire function into

	license: mit
	height: 540
	border: no

	license: mit
	height: 620
	border: no