creyer / html-to-slack.php

Created June 5, 2018 13:30 — forked from siamkreative/html-to-slack.php

Convert HTML string to Slack's own markup language (https://slack.zendesk.com/hc/en-us/articles/202288908-Formatting-your-messages)

	<?php

	/* Strip out un-supported HTML tags */
	$content = strip_tags($content, '<strong><em><del><li><code><pre>');

	/* Properly format message */
	$content = str_replace(array('<strong>', '</strong>'), array('', ''), $content);
	$content = str_replace(array('<em>', '</em>'), array('_', '_'), $content);
	$content = str_replace(array('<del>', '</del>'), array('~', '~'), $content);
	$content = str_replace(array('<li>', '</li>'), array('•', ''), $content);

creyer / Hash Ladders for Shorter Lamport Signatures.md

Created September 6, 2017 16:10 — forked from karlgluck/Hash Ladders for Shorter Lamport Signatures.md

I describe a method for making Lamport signatures take up less space. I haven't seen anyone use hash chains this way before, so I think it's pretty cool.

What's this all about?

Digital cryptography! This is a subject I've been interested in since taking a class with Prof. Fred Schneider back in college. Articles pop up on Hacker News fairly often that pique my interest and this technique is the result of one of them.

Specifically, this is about Lamport signatures. There are many signature algorithms (ECDSA and RSA are the most commonly used) but Lamport signatures are unique because they are formed using a hash function. Many cryptographers believe that this makes them resistant to attacks made possible by quantum computers.

How does a Lamport Signature work?

creyer / Has weird right-to-left characters.txt

Created May 18, 2016 07:49 — forked from endolith/Has weird right-to-left characters.txt

Unicode smileys emoticons emoji

	ּ_בּ
	בּ_בּ
	טּ_טּ
	כּ‗כּ
	לּ_לּ
	מּ_מּ
	סּ_סּ
	תּ_תּ
	٩(×̯×)۶
	٩(̾●̮̮̃̾•̃̾)۶

creyer / gist:f47a4d8ff73d48edf4b7

Last active August 29, 2015 14:24 — forked from xeno-by/gist:2559714

	Answers http://stackoverflow.com/questions/10373318/mixing-in-a-trait-dynamically.

	Compile as follows:
	scalac Common_1.scala Macros_2.scala
	scalac Common_1.scala Test_3.scala -cp <path to the result of the previous compilation>

	Tested in 2.10.0-M3, will most likely not compile by the time 2.10.0 final is released, because we're actively rehashing the API.
	However the principles will remain the same in the final release, so the concept itself is okay.
	upd. Code updated for 2.10.0-M7.
	upd. Code updated for 2.10.0-RC1.

creyer / gist:74f77af01dce07daac34

Created December 10, 2014 17:04

custom cache with Monifu

	import monifu.concurrent.atomic.AtomicInt
	import monifu.reactive.Observable
	import monifu.reactive.channels.PublishChannel
	import monifu.reactive.subjects.PublishSubject
	import monifu.reactive._
	import scala.concurrent.{Future}
	import concurrent.duration._
	import monifu.concurrent.Implicits._
	import monifu.reactive.Ack.Continue

creyer / gist:5f0252282a759397e825

Created December 10, 2014 15:30

cache with monifu

	object Main extends App {
	//create a cache, hot observable
	val cache = Observable.interval(15.second).flatMap (_ => DBEmulator.read()).publish()
	//extract elements from cache at fixed intervals
	cache.sampleRepeated(1.second).doWork(a => println(s"${System.currentTimeMillis()/1000} I prove works: $a")).subscribe()
	cache.sampleRepeated(3.second).doWork(a => println(s"${System.currentTimeMillis()/1000} III prove works: $a")).subscribe()
	cache.sampleRepeated(5.second).doWork(a => println(s"${System.currentTimeMillis()/1000} V prove works: $a")).subscribe()
	//connect to the hot observable, start the stream
	val subscription = cache.connect()
	}

sorin.c creyer

What's this all about?

How does a Lamport Signature work?