The Gardener | Blogging from Travis Fantina

Latest — Jan 10, 2025

Today I Learned ~D[2025-01-10]

Today's TIL has a twist ending... so stick around. Elixir has a shortcut for creating anonymous functions. I've always written: greet = fn name -> "Hello, #{name}!" end # which can be invoked greet.("Travis") # returns "Hello, Travis!" However; I came

Recent

Morning walk

Interesting things I passed on the way to the library with my daughter here in Guelph.

Merry Christmas everyone!

Canada Post Strike

Canada Post Strike

For the past few weeks postal workers in Canada have been on strike. This has, of course, caused a fair amount of disruption during the Christmas season. Before I even knew the details of the strike I was naturally on the side of the workers. This is my default position:

Not to rush Christmas, but I think I'll try my hand at Advent of Code this year. It will be a good chance to play around with Rust.

Adding a `soft_delete` to Ecto Multi pipelines

I'm a big fan of Ecto, Elixir's database wrapper. The Multi library lets you build up a series of operations that happen in order, if one fails the entire operation rolls back. Multi comes with the a lot of standard CRUD built in, insert/4, update/

Went walking with my daughter and we picked some autumnal bouquets.

TIL Struct matching in Guards

Not so much a TIL but I always get confused with the proper syntax. You can pattern match on a struct and use it in a guard to only let through the structs you want: @spec address_formater(BillAddress.t() | ShipAddress.t()) :: String.t() def address_formatter(%struct{} = address) when

I'm 33 years old and I only learned how to spell "doesn't" this year. Getting enough practice where I almost spell it right the first time. (I think I used to default to dosen't).

TIL UUIDv4 vs UUIDv7

I've always run with UUID v4 because it's the default for the Ecto.UUID library in Elixir. However a coworker recommended UUID v7. Having never really looked into UUID other than to implement as a primary key the distinction was news to me. Effectively; * UUID v4