It was just a couple of days ago that I started an experimental wiki project called Gyro ... it's always fun when a project just grows features organically. It does this, so it makes sense to make it do that, and then this other thing is easy, and so on.
So, here is what happened with Gyro:
| Or so one can hope. |
I don't have the usual programmer's education. I studied maths, and then dropped out of that, and am mostly self-taught. So, there are some parts of programming I always saw wearily, thinking to myself that I really should go to school to learn them. One remarkable such area is parsing and implementing languages.
Well... sure, school is always a good idea, but this is not that hard. In this article I will explain how to go from nothing to a functioning, extensible language, using Python and PyParsing. If you are as scared of grammars, parsers and all that jazz as I used to be, come along, it's pretty simple,
What is a grammar? It's what defines what is and what is not valid in our language, and it's the hardest part to get right, mostly because it's all about making decisions.
| # Usando esta lista de palabras: | |
| # https://raw.githubusercontent.com/javierarce/palabras/master/listado-general.txt | |
| import sys | |
| validos = set('abcdefol') | |
| colores = set() | |
| for palabra in open(sys.argv[1]): | |
| palabra = palabra.strip() |
Nos levantamos temprano para viajar a Puerto Iguazú en un vuelo de LAN, saliendo de Aeroparque a las 9 AM. Como somos cuidadosos, pensábamos llegar a las 7. Para eso me levanté 5:30. ¡Soy cuidadoso! Por eso revisé el mail de Despegar buscando el código de reserva. Como soy cuidadoso, lo puse en la página de LAN, que amablemente me informó que mi reserva no existía.
Oops.
Resulta que mi pago a Despegar habia sido rechazado, y el mail que avisaba eso fué a la carpeta de spam. Y era ANTERIOR al mail que decía "Felicitaciones por su reserva". En fin. Voy donde estaba Rosario y le digo: "No me mates, pero ... no tenemos pasajes." Sorprendido de seguir vivo, bajé y traté de comprarlos de nuevo. Como aparte de cuidadoso soy medio salame, lo intenté por Despegar. Luego de ser rechazado 4 veces más, fuí a la página de LAN y, sorpresa! Compré exactamente los mismos pasajes que había comprado un mes antes, a casi el mismo precio, con la misma tarjeta que Despegar rechazaba. FUCK
| import copy | |
| board = { | |
| 'A': [' ', ' ', ' '], | |
| 'B': [' ', ' ', ' '], | |
| 'C': [' ', ' ', ' '], | |
| } | |
| def print_board(): |
| ## -*- coding: utf-8 -*- | |
| <%namespace name="helper" file="post_helper.tmpl"/> | |
| <%namespace name="pheader" file="post_header.tmpl"/> | |
| <%namespace name="comments" file="comments_helper.tmpl"/> | |
| <%inherit file="post.tmpl"/> | |
| <%block name="extra_head"> | |
| ${parent.extra_head()} | |
| <script src="/assets/js/jquery.min.js"></script> | |
| <script src="//cdnjs.cloudflare.com/ajax/libs/Flowtype.js/1.1.0/flowtype.min.js"></script> |