Rodrigo Morais rodigu

there are built-in key bindings for scrolling on powershell

was looking for a way to do this, as i have been looking through docker logs¹ for basically the whole day². a lot of moving my hand all the way over to the mouse to scroll

after searchingit up, a reddit comment suggested adding key bindings

why is the docker ps command so poorly fomatted? it is terribly annoying to parse what is going on a basic visual level. seems to be a gripe sustained by at least 173 other poor souls ↩
the docker inspect command has been quite useful ↩

insert an oval shape
write a question mark inside it (style > text)
add an action, bookmark type
you can write a help-kind of text in the tooltip section (action > tooltip)

The finest qualities of our nature, like the bloom on fruits, can be preserved only by the most delicate handling. Yet we do not treat ourselves nor one another thus tenderly.

Thoreau, Henry David; Walden; 31

wumbo is a website with references for formal mathematical symbols.

pip show [package]

in searching more in depth for topics in software architecture, i have come accross Simon Brown's Software Architecture vs Code lecture, for GOTO 2014.

the section that most caught my attention, was his reference to Why Most Unit Testing is Waste [^1], by James O Coplien.

in the paper, a specific quote from Coplien caught my attention:

(...) notions such as: “Every line of code has been reached,” which, from the perspective of theory of computation, is pure nonsense (...)

which is, undeniably true and, as i tought more about it, also comically unfortunate that lines of code reached is used as a measurement of test coverage.

one of our classes, which made use of the pbipy library, could not be passed through XCom. we were getting the following error: airflow cannot pickle [CLASS] object

the fix involved changing a cfg variable to false:

# Whether to enable pickling for xcom (note that this is insecure and allows for
# RCE exploits).
# Variable: AIRFLOW__CORE__ENABLE_XCOM_PICKLING
enable_xcom_pickling = False

say we have a dataframe with many columns.

we want a new id column, which will be a concatenation of two or more columns in the dataframe.

this is useful in a case when we have a table without a "natural" id. for example a sales table with a client_id column, and a purchase_datetime.

this function will concat our columns:

	NPR how much does this cow weight survey:

	- https://www.npr.org/sections/money/2015/08/07/429720443/17-205-people-guessed-the-weight-of-a-cow-heres-how-they-did
	- https://www.npr.org/sections/money/2015/08/07/429720443/17-205-people-guessed-the-weight-of-a-cow-heres-how-they-did

	[Hill investment wisdom of the crowd](https://www.hillinvestmentgroup.com/2023/08/17/wisdom-of-crowds/)

	[first american wisdom of the crowd](https://blog.firstam.com/economics/the-wisdom-of-the-crowd-myth-or-reality)

	betting markets in elections

Rodrigo Morais rodigu

Footnotes