xd009642

Rust 2019

This is a bit of a brain dump of my thoughts about Rust 2019. Mainly I work on my own code coverage tool tarpaulin, embedded rust and random little tools. So my perspective will be coloured by this.

Stabilising proc-macro

So this year tarpaulin found itself needing to be compiled on nightly. This was because syntex-syntax is no longer maintained, and as a result, new syntax was

	### Keybase proof

	I hereby claim:

	* I am xd009642 on github.
	* I am xd009642 (https://keybase.io/xd009642) on keybase.
	* I have a public key whose fingerprint is E41E B6C4 DF00 0782 0DE0 A150 560F 1F28 BCFC DD24

	To claim this, I am signing this object:

	#
	# Downloads a random RFC and saves to text file.
	#

	import random
	import urllib.request
	MAX_RFC = 8449

	while True:
	choice = random.randint(1, MAX_RFC)

	<!-- Portions (C) International Organization for Standardization 1986:
	Permission to copy in any form is granted for use with
	conforming SGML systems and applications as defined in
	ISO 8879, provided this notice is included in all copies.
	-->

	<!ELEMENT coverage (sources?,packages)>
	<!ATTLIST coverage line-rate CDATA #REQUIRED>
	<!ATTLIST coverage branch-rate CDATA #REQUIRED>
	<!ATTLIST coverage lines-covered CDATA #REQUIRED>



	module cordic
	(
	input clk,
	input ce,
	input rst,
	input signed [18-1:0] x_in,
	input signed [18-1:0] y_in,
	input [18-1:0] phase_in,



	module cordic
	(
	input clk,
	input ce,
	input rst,
	input signed [18-1:0] x_in,
	input signed [18-1:0] y_in,
	input [18-1:0] phase_in,

	pub struct HoughParameters<T, D, F>
	where
	D: Dimension,
	F: Sized + (Fn(f64) -> Array1<T>),
	{
	/// Represents the dimensionality of the hough space
	pub dim: PhantomData<D>,
	/// Parameter bounds
	pub bounds: Array2<T>,
	/// Search resolution for each parameter. Should be the same size as bounds.

	function read_file(path)
	local file, errorMessage = io.open(path, "r")
	if not file then
	error("Could not read the file:" .. errorMessage .. "\n")
	end
	local content = file:read "*all"
	file:close()
	return content
	end
	local FileBody = read_file("audio.wav")

	use bytes::{Buf, Bytes, BytesMut};
	use opentelemetry::sdk;
	use opentelemetry::sdk::propagation::TraceContextPropagator;
	use opentelemetry::sdk::trace::{Builder, Sampler};
	use opentelemetry::trace::TracerProvider;
	use opentelemetry::{global::set_text_map_propagator, KeyValue};
	use std::convert::TryFrom;
	use std::env::var;
	use std::net::SocketAddr;
	use std::process::Stdio;

	#[derive(Debug, Clone)]
	pub struct Biquad{
	/* https://ccrma.stanford.edu/~jos/fp/Direct_Form_II.html */
	b0: f64,
	b1: f64,
	b2: f64,
	a1: f64,
	a2: f64,
	}