Chris Done chrisdone

Rust notes

Here are the notes I took on approaching writing a project in Rust for the first time, from a Haskeller's perspective.

Conclusions

I didn't have any particular trouble worked with and anticipating the needs of the move semantics of Rust. It's not much unlike the experience of dealing with pure/non-pure code in Haskell; you just

Idea: A web frontend for Emacs via CodeMirror

This is a discussion/thought-process document with my ideas that I've been adding to recently.

Motivation

Why a web frontend for Emacs?

A web frontend would benefit from being cross-platform in the sense

Email message parsing in Haskell in 2018

Background: I am moving away from GMail to my own Haskell-based server (SMTP receiver/sender, web-based email client, spam filtering, etc.). All email to @chrisdone.com goes through this server (mx.chrisdone.com) as of today, and [email protected] forwards a copy of everything to it.

This is a summary/tracking document of my efforts to simply parse email messages in Haskell for the SMTP receiver.

	FROM debian:stretch-slim
	MAINTAINER Chris Done

	################################################################################
	# OS deps

	RUN apt-get update && apt-get install -y \
	gnupg \
	gpgv && \
	apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys BA3CBA3FFE22B574 \

	#include <stdio.h>
	#include <fcntl.h>
	#include <unistd.h>
	#include <string.h>

	#define BUFFER_SIZE 8192

	size_t process_data(char *text, size_t bytes_read)
	{
	size_t popCount = 0;

	#!/bin/bash

	SECONDS=0
	cmd="stack $@"
	/home/chris/.local/bin/stack-bin "$@"
	result="$?"

	if [ "$SECONDS" -gt 0 ]; then
	if [ "$result" -eq 0 ]; then
	notify-send -u normal -t 1000 "Stack completed successfully" "$cmd"

	# Create the group

	sudo cgdelete memory:/emacs # Recreating it when making changes seems to help them take effect
	sudo cgcreate -g memory:/emacs -t chris:chris
	sudo cgset -r memory.swappiness=0 emacs
	sudo cgset -r memory.limit_in_bytes=1GB emacs

	# Run the process with memory limits

	cgexec -g memory:emacs emacs

	sift trace sift-bindings// --flag-binding "ghc-prim GHC.Prim raise#"
	Flagged binding: ghc-prim:GHC.Prim.raise#
	Used by aeson:Data.Aeson.Encoding.Builder.day
	Used by aeson:Data.Aeson.Encoding.Builder.digit
	Used by aeson:Data.Aeson.Encoding.Builder.scientific
	Used by aeson:Data.Aeson.Encoding.Builder.timeOfDay64
	Used by aeson:Data.Aeson.Encoding.Builder.timeZone
	Used by aeson:Data.Aeson.Encoding.Builder.twoDigits
	Used by aeson:Data.Aeson.Internal.Time.diffTimeOfDay64
	Used by aeson:Data.Aeson.Parser.Time.seconds

	Used by base:GHC.Real.ratioZeroDenominatorError
	Used by base:GHC.Real.reduce
	Used by base:GHC.Real.-
	Used by base:GHC.Real.+
	Used by base:GHC.Real.*
	Used by base:GHC.Real.%
	Used by base:GHC.Word.toRational
	Used by base:GHC.Real.fromRational
	Used by base:GHC.Real.realToFrac
	Used by base:GHC.Read.convertFrac




	Appendix 2


	Continued Fraction Arithmetic


	by