Tyler Barker
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Tyler Barker
@tylerbarker.com
300 followers 340 following 46 posts
Dev in Aus 🇦🇺 Building with #ElixirLang

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The real reason to get a split keyboard 🧠
An office desk with two KRK studio monitors, a MacBook Pro and external display, a midi piano keyboard and split ergo keyboard, with Reason open for music making.
July 19, 2025 at 10:23 AM
tylerbarker.com
Maybe the most amazing thing about Elixir to me pattern matching on binaries. Parsing a WAV file is almost as simple as writing down the file spec verbatim - look at this! #ElixirLang
Plaintext formatted to read as a table, outlining the WAV file specification. It reads: ``` WAV File Format Structure ------------------------ Position | Sample Value | Description ----------|-------------|------------- 1-4 | "RIFF" | Marks the file as a riff file. Characters are each 1 byte long. 5-8 | File size | Size of the overall file - 8 bytes, in bytes (32-bit integer). | (integer) | Typically, you'd fill this in after creation. 9-12 | "WAVE" | File Type Header. For our purposes, it always equals "WAVE". 13-16 | "fmt " | Format chunk marker. Includes trailing null 17-20 | 16 | Length of format data as listed above 21-22 | 1 | Type of format (1 is PCM) - 2 byte integer 23-24 | 2 | Number of Channels - 2 byte integer 25-28 | 44100 | Sample Rate - 32 bit integer. Common values are 44100 (CD), | | 48000 (DAT). Sample Rate = Number of Samples per second, or Hertz. 29-32 | 176400 | (Sample Rate * BitsPerSample * Channels) / 8 33-34 | 4 | (BitsPerSample * Channels) / 8 | | 1 - 8 bit mono | | 2 - 8 bit stereo/16 bit mono | | 4 - 16 bit stereo 35-36 | 16 | Bits per sample 37-40 | "data" | "data" chunk header. Marks the beginning of the data section. 41-44 | File size | Size of the data section. | (data) | Note: Sample values shown are for a 16-bit stereo source. ``` An Elixir code sample that showcases the power of pattern matching binaries as bitstrings - in this case for a WAV audio file. The code reads: ``` <<"RIFF", chunk_size::little-size(32), "WAVE", "fmt ", subchunk1_size::little-size(32), audio_format::little-size(16), num_channels::little-size(16), sample_rate::little-size(32), byte_rate::little-size(32), block_align::little-size(16), bits_per_sample::little-size(16), data_chunk::binary>> = File.read!("./banger.wav") ```
February 18, 2025 at 3:21 AM
tylerbarker.com
Saving this for the dozens of us in the NBA <> Elixir Venn diagram when that day comes.
Elixir Lang's logo superimposed over Jayson Tatum exclaiming "What they gonna say now?" after winning an NBA championship, referencing instead Elixir after getting a type system.
February 8, 2025 at 10:08 AM
tylerbarker.com
Ever wanted your LiveView components to sparkle? Use this hook: gist.github.com/tylerbarker/...

#ElixirLang #LiveView
January 14, 2025 at 4:03 AM
tylerbarker.com
Cloak is rad!

I'm rebuilding my wife's website which handles some sensitive data. Last I checked, cloak_ecto doesn't support SQLite - but it didn't take much to do it myself 🔒

github.com/danielberkom...
Cloak vault module. Ecto schema with binary values, marked encrypted fields. Context module leveraging the vault.
November 26, 2024 at 6:35 AM