ElixirDrops

Welcome to ElixirDrops!

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Download/Read Hex Library Doc Offline

You can use mix hex.docs fetch ash to download documentation and read them offline with mix hex.docs offline ash. Whats more amazing is that in your ...

mnkhod

5 hours ago

Give background processes useful labels

PIDs are not much help when several copies of the same worker are running. Process.set_label/1 adds a term that identifies what each process is doing....

almirsarajcic

23 hours ago

Build an Ecto select a field at a time

An Ecto query has one select, which can make optional query helpers awkward. select_merge/3 lets each helper add fields to an existing map select. ``...

almirsarajcic

2 days ago

Find wide compile dependencies with `mix xref graph`

When a small change recompiles a large part of an application, mix xref graph can show which file has the widest compile-time reach....

almirsarajcic

2 days ago

Test CLI input and output with `CaptureIO`

Test terminal behavior through the real IO calls instead of replacing IO.gets/1 or IO.write/2 with mocks. ExUnit.CaptureIO.capture_io/2 supplies stdin...

almirsarajcic

18 days ago

`GenServer.call/3` timeout does not cancel work

Treat the third argument to GenServer.call/3 as a caller deadline, not a cancellation mechanism. When the deadline expires, the call exits the caller ...

almirsarajcic

20 days ago

Let `Task.async_stream/3` emit fast work first

Task.async_stream/3 quietly holds fast results behind the earliest slow input because ordered defaults to true. When independent IO work does not need...

almirsarajcic

20 days ago

How LiveView decides what to re-render

Your LiveView does not re-render its template when an assign changes. It re-runs only the fragments that read an assign that actually changed, and com...

almirsarajcic

1 month ago

Build a LiveView wizard that remembers every step

Multi-step forms usually break in one of two ways: they lose everything when the user clicks "Back", or they defer all validation to the final submit....

almirsarajcic

1 month ago

Schemaless changesets validate forms without the database

Need to validate form data, preview changes, or validate multi-step workflows without hitting the database? Use schemaless changesets with Ecto.Change...

almirsarajcic

1 month ago

Stop mounting your LiveView twice

Every LiveView mounts twice on first page load — once for the static HTTP "dead render," then again when the WebSocket connects. If mount/3 loads data...

almirsarajcic

1 month ago

`:persistent_term` outperforms ETS for static data

ETS is the default for shared lookups, but for read-only data that never changes at runtime it does work you don't need: every read copies the term ou...

almirsarajcic

2 months ago

Speed up CI with parallel ExUnit partitions

Running your full test suite sequentially in CI is wasted time. ExUnit has built-in support for partitioning — split your suite into N slices and run ...

almirsarajcic

2 months ago

`assign_new/3` prevents expensive recomputations in LiveView

Calling assign/2 recalculates values every time the socket updates, even if the data hasn't changed. Use assign_new/3 to compute expensive operations ...

almirsarajcic

3 months ago

`Req.Test` stubs keep HTTP out of your tests

Req ships with a built-in test stub mechanism. No Bypass, no Mox, no additional dependencies — just three small changes and your HTTP calls never hit ...

almirsarajcic

3 months ago