ElixirDrops

Welcome to ElixirDrops!

Hello there and welcome to the ultimate hub for the Elixir community! Whether you're a seasoned developer or just starting your journey, ElixirDrops is the perfect place to discover, share, and discuss the best tips and tricks for mastering Elixir. Sign in to explore, learn and become a contributor on this platform.

String.downcase/1 can turn garbage into valid input: use :ascii

String.downcase/1 and String.upcase/1 follow Unicode case mapping. That's usually what you want for human text, but not for identifiers:...

igorgbr

4 hours ago

Choosing Elixir tools with elixir.menu

elixir.menu is a guide to choosing tools for Elixir applications, from command-line utilities to Phoenix web apps. It covers libraries and built-in OT...

almirsarajcic

yesterday

Admit when you’re wrong

People in the Elixir community shouldn't be butthurt about DHH's Campfire benchmarks. We should use them as an opportunity to look at the state of the...

almirsarajcic

9 days ago

Trapping exits so terminate/2 actually runs

A GenServer that flushes buffered work in terminate/2 loses it when its supervisor shuts it down, unless the process traps exits:...

almirsarajcic

16 days ago

Keeping compile_env values out of runtime.exs

Application.compile_env/3 bakes a value into the module when it compiles. If config/runtime.exs sets the same key, the two can disagree without anyone...

almirsarajcic

20 days ago

Sorting DateTime lists with Enum.sort/2

Enum.sort/1 puts January 31 after February 1:...

almirsarajcic

21 days ago

Setting updated_at yourself in Repo.update_all/3

Repo.update_all/3 writes the columns you give it and nothing else, so updated_at keeps its old value:...

almirsarajcic

22 days ago

How we use ETS as a live code-graph database in Synapse MCP

We have built/building Synapse MCP — a tool that gives AI agents a persistent map of your codebase — and one design question came up early: where does...

spasm-myelixlabs

22 days ago

Running doctests against the database

Doctests are straightforward until an example calls Repo. A plain ExUnit case doesn't check out an Ecto sandbox connection, so run database-backed doc...

almirsarajcic

23 days ago

Keeping Oban's time units explicit

Oban's Lifeline and Pruner accept raw integers in different units: rescue_after is milliseconds, while max_age is seconds. On current Oban releases, ...

almirsarajcic

24 days ago