midir | Cross-platform realtime MIDI processing in Rust | Audio Utils library
kandi X-RAY | midir Summary
kandi X-RAY | midir Summary
Cross-platform, realtime MIDI processing in Rust.
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QUESTION
I am using a Rust Midi library to receive and handle real-time Midi messages. It exposes a connect
function that accepts a callback which will be called for every Midi message that arrives. My plan was to forward these Midi messages to a channel. This is the minimal version of the code that still reproduces my issue (Rust Playground link):
ANSWER
Answered 2018-Dec-09 at 10:33It clicked inside my brain.
Additionally, to the move
keyword, the following is required:
connect
provides a reference to an array which lives for the scope of the callback. That means that when the callback finishes, the &[u8]
is inaccessible. I tried sending the reference outside of the callback which made no sense because then it would have to live longer.
The solution is to create an owned object from the slice, like a Vec
. That's trivially done by adding .to_vec()
:
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Rust is installed and managed by the rustup tool. Rust has a 6-week rapid release process and supports a great number of platforms, so there are many builds of Rust available at any time. Please refer rust-lang.org for more information.
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