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@typeswitch-dev
typeswitch-dev / daiyon.c
Last active October 7, 2025 05:14
第四 (Daiyon) — a Japanese & Forth inspired postfix language
#include <stdio.h>
#include <string.h>
#include <assert.h>
FILE *in; long M[1<<24]={0}, *D, *R, H=0x130000, IP=0, T;
long getu() { long t, h = getc(in); if (h < 0xC0) return h;
t = ((h&0x1F) << 6) | (getc(in) & 0x3F); if (h < 0xE0) return t;
t = ( t << 6) | (getc(in) & 0x3F); if (h < 0xF0) return t;
t = ( t << 6) | (getc(in) & 0x3F); return t & 0x1FFFFF; }
void putu(long c) { if (c < 0x80) { putchar(c); return; }
if (c < 0x7FF) { putchar(0xC0|(c>>6)); } else {

In this tutorial we're going to build a set of parser combinators.

What is a parser combinator?

We'll answer the above question in 2 steps.

  1. What is a parser?
  2. and, what is a parser combinator?

So first question: What is parser?

@adamJLev
adamJLev / fields.py
Created June 5, 2015 18:43
Stripe-style short alphanumeric UUID fields
from django.db.models import SubfieldBase
from django.core.exceptions import ImproperlyConfigured
from django_extensions.db.fields import ShortUUIDField
class XidField(ShortUUIDField):
"""
XID stands for external ID.
Randomly generated IDs (base62 encoded UUID) used for public display purposes.
The random ID gets a short textual prefix for improved legibility, like Stripe's IDs.
@sindresorhus
sindresorhus / compile-objc.sh
Last active February 16, 2025 20:01
Compile Objective-C on the command-line with clang
# -fobjc-arc: enables ARC
# -fmodules: enables modules so you can import with `@import AppKit;`
# -mmacosx-version-min=10.6: support older OS X versions, this might increase the binary size
clang main.m -fobjc-arc -fmodules -mmacosx-version-min=10.6 -o main
@rodricios
rodricios / summarize.py
Last active November 18, 2020 17:21
Flipboard's summarization algorithm, sort of
#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
pip install networkx distance pattern
In Flipboard's article[1], they kindly divulge their interpretation
of the summarization technique called LexRank[2].
@rix501
rix501 / dynamic-logs.coffee
Last active December 16, 2015 23:21
Because we needed a birdlog and a jvstinlog
# Description:
# Keep a variaty of logs
#
# Dependencies:
#
# Configuration:
#
# Commands:
# hubot logs - shows all logs stored
# hubot <name>log last <number> - show last number of logs
@jakeonrails
jakeonrails / Ruby Notepad Bookmarklet
Created January 29, 2013 18:08
This bookmarklet gives you a code editor in your browser with a single click.
data:text/html, <style type="text/css">#e{position:absolute;top:0;right:0;bottom:0;left:0;}</style><div id="e"></div><script src="http://d1n0x3qji82z53.cloudfront.net/src-min-noconflict/ace.js" type="text/javascript" charset="utf-8"></script><script>var e=ace.edit("e");e.setTheme("ace/theme/monokai");e.getSession().setMode("ace/mode/ruby");</script>
@font-face {
font-family: 'EntypoRegular';
src: url('font/entypo.eot');
src: url('font/entypo.eot?#iefix') format('embedded-opentype'),
url('font/entypo.woff') format('woff'),
url('font/entypo.ttf') format('truetype'),
url('font/entypo.svg#EntypoRegular') format('svg');
font-weight: normal;
font-style: normal;
}
@anantn
anantn / firebase_player_assignment.js
Last active January 14, 2023 01:51
Firebase: Assigning players in a multiplayer game. This snippet assigns you a spot in a game if the game isn't full yet.
function go() {
var userId = prompt('Username?', 'Guest');
// Consider adding '/<unique id>' if you have multiple games.
var gameRef = new Firebase(GAME_LOCATION);
assignPlayerNumberAndPlayGame(userId, gameRef);
};
// The maximum number of players. If there are already
// NUM_PLAYERS assigned, users won't be able to join the game.
var NUM_PLAYERS = 4;