federico lopez son0p

Literate Ledger Programming(?) with Org-mode

Recently, given the economic hardships presented by the current pandemic, coupled with the fact that I have started making my own money, I have started to keep track of my finances. I have always known that I would use Ledger, the command line account tool, to manage my money. Ledger was created by an Emacs maintainer, which hints to a very good Emacs integration, and indeed =ledger-mode= offers a great environment for editing, reporting and modifying Ledger files. But even though it is a pretty complete major mode, I missed being

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Navigating while typing

Let’s start by what you can do while typing. These keystrokes change only what happens on the input line (the line where you type stuff).

arrow left/right: move one character left or right.

IRC Reference

by xero updated 10.29.24

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

	#/bin/sh
	ffplay -exitonkeydown -exitonmousedown -fs -fflags nobuffer -probesize 32 -analyzeduration 1 -f lavfi -i "amovie=default:f=alsa,asplit=2[sv][eb];\
	[sv]showvolume=b=0:o=v:w=480:h=23[sv-v];\
	[eb]ebur128=video=1:size=754x480[eb-v][out1];\
	[eb-v][sv-v]hstack=2[out0]"

	(setq org-capture-templates '(
	;...
	("t" "h/ledger transaction" plain
	(file "~/finance/2020.journal")
	"%(org-read-date) %^{Description}
	%^{Category\|expenses:food:groceries\|expenses:food:dining\|expenses:transport:gasoline\|expenses:home\|expenses:medical\|expenses:entertainment\|revenues:consulting\|revenues:misc} %^{Amount}
	%^{Asset/liability account\|assets:cash\|assets:bank:checking\|liabilities:bank:credit card}"
	:empty-lines 1)
	))

	"""ledger journal parser

	We use this to parse the ledger file because we want to preserve the
	exact format of the file including spaces, etc. It maps the parsed
	transaction to the origin lines of the file.

	"""
	import ledger

	to get it working, install Emscripten:

	https://github.com/kripken/emscripten/wiki/Tutorial

	(on Ubuntu: https://github.com/kripken/emscripten/wiki/Getting-Started-on-Ubuntu-12.10)

	set all the env variables and run build.sh.

	open sin_audiodata.html in your Firefox.