gavinandresen

Half-baked thoughts exploring a different way of implementing a fully-validating BCH node.

The idea is to shift the storage of full transaction data to wallets, and explore how little data a fully validating node could store. This isn't a problem today (the UTXO set easily fits in the RAM of an inexpensive server-class machine), but might eventually be at very large transaction volumes.

Initial block download is a problem today (it is annoying to have to wait several hours or days to sync up a new node), and this scheme could make it orders of magnitude faster by shifting the time when full transaction data is broadcast from initial block download to new transaction announcement.

LukaJCB

module Algebra where

import Prelude
import Control.Monad.Eff (Eff)
import Data.Maybe (Maybe(..))


newtype ConsoleAlg f = ConsoleAlg
  { printLn :: String -> f Unit 
  , readLn :: f String

TechNickAI

Trader

Automated trade execution engine.

The problem

To maintain a standard of vacation-level automation, we need to be able to enter and exit positions at high volume without concern.

Key concerns include:

• Being able to enter / exit positions at high [relative] volume with a minimal impact on the market

rahulmutt

Table of Contents generated with DocToc

• The Motivation & Design for GHCVM
  • Motivation
  • Design
    • The Core Idea
    • Objectives
• Deliverable for Midterm

sandeepraju

Transparent Git Encryption

This document has been modified from its [original format][m1], which was written by Ning Shang (geek@cerias.net). It has been updated and reformatted into a [Markdown][m2] document by [Woody Gilk][m3] and [republished][m4].

Description

When working with a remote git repository which is hosted on a third-party storage server, data confidentiality sometimes becomes

vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

jczaplew

javascript:(function(e,a,g,h,f,c,b,d)%7Bif(!(f=e.jQuery)%7C%7Cg%3Ef.fn.jquery%7C%7Ch(f))%7Bc=a.createElement(%22script%22);c.type=%22text/javascript%22;c.src=%22http://ajax.googleapis.com/ajax/libs/jquery/%22+g+%22/jquery.min.js%22;c.onload=c.onreadystatechange=function()%7Bif(!b&&(!(d=this.readyState)%7C%7Cd==%22loaded%22%7C%7Cd==%22complete%22))%7Bh((f=e.jQuery).noConflict(1),b=1);f(c).remove()%7D%7D;a.documentElement.childNodes%5B0%5D.appendChild(c)%7D%7D)(window,document,%221.3.2%22,function($,L)%7B$('%23header,%20.pagehead,%20.breadcrumb,%20.commit,%20.meta,%20%23footer,%20%23footer-push,%20.wiki-actions,%20%23last-edit,%20.actions,%20.header,.site-footer,.repository-sidebar,.file-navigation,.gh-header-meta,.gh-header-actions,#wiki-rightbar,#wiki-footer,.commit-tease').remove();%20$('%23files,%20.file').css(%7B%22background%22:%22none%22,%20%22border%22:%22none%22%7D);%20$('link').removeAttr('media');%7D); var removeMe = document.getElementsByClassName("file-header")[0]; removeMe.parentNode.removeChild(r

jdegoes

1. Develop a model for boolean values (Bool), which may be either true or false.

   Think: Do you need an if-then-else construct? Why or why not?

   Bonus: Develop a model for eithers (Either), whih can be one thing ("left") or another ("right"), and model a boolean as a partitioning of a set into two disjoint sets.

   type Bool = forall a. a -> a -> a
   

_true :: Bool

robphoenix

This is unmaintained, please visit Ben-PH/spacemacs-cheatsheet

Useful Spacemacs commands

• SPC q q - quit
• SPC w / - split window vertically
• SPC w - - split window horizontally
• SPC 1 - switch to window 1
• SPC 2 - switch to window 2
• SPC w c - delete current window

Thimoteus

module Main where

import Prelude

import Data.Lens (LensP(), (+~), lens)

import Control.Monad.Aff (runAff, later, later')
import Control.Monad.Eff (Eff())
import Control.Monad.Eff.Exception (throwException)
import Control.Monad.Rec.Class (forever)