davidglassborow

How to get on Rinkeby Testnet in less than 10 minutes

Following instructions from the excellent https://www.rinkeby.io/

Synchronizing a Full Node

A full node lets you access all state. There is a light node (state-on-demand) and wallet-only (no state) instructions as well,

davidglassborow

#r "packages/Twilio/lib/net451/Twilio.dll"
#r "System.Xml.Linq"
open System
open Twilio.TwiML
open Twilio.TwiML.Voice

module Model =

    /// Represents what we will tell the Twilio phone system to do
    type PhoneCommand =

davidglassborow

open System.Collections.Generic
open Microsoft.FSharp.Collections


[<RequireQualifiedAccess>]
module Folds =

    // These are the fast implementations we actually want to use

davidglassborow

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

davidglassborow

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

davidglassborow

#r "../packages/FSharp.Data.2.2.5/lib/net40/FSharp.Data.dll"
open System
open System.IO
open FSharp.Data

[<Literal>]
let lineBreak = "\r\n"

type CommitInfo = {Hash : string; Author : string; TimeStamp : DateTime; Message : string}
type CommittedFile = {LinesAdded: int option; LinesDeleted: int option; FileName: string}

davidglassborow

type BusyBuilder(blockUi, unblockUi) =
    member this.Bind(x, f) = async.Bind(x, f)
    member this.Combine(e1, e2) = async.Combine(e1, e2)
    member this.Delay(f) =
        async {
            blockUi ()
            let! result = async.Delay f
            unblockUi ()
            return result
        }

davidglassborow

namespace Topshelf

[<AutoOpen>]
module Topshelf =

  open System
  open Topshelf.HostConfigurators
  open Topshelf.Runtime

  let configureTopShelf f =

davidglassborow

(*
This script analyzes the dependencies between top level types in a .NET Assembly.
It is then used to compare the dependency relationships in some F# projects with those in some C# projects.

Note that no attempt has been made to optimize the code yet! 

REQUIRES:

* Mono.Cecil for code analysis
  From http://www.mono-project.com/Cecil#Download 

davidglassborow

#I @"packages\FSharp.Data.Toolbox.Twitter.0.6\lib\net40"
#I @"packages\FSharp.Data.2.1.1\lib\net40"

#r @".\packages\FSharp.Data.Toolbox.Twitter.0.6\lib\net40\FSharp.Data.Toolbox.Twitter.dll"
#r @".\packages\FSharp.Data.2.1.1\lib\net40\FSharp.Data.dll"

open FSharp.Data.Toolbox.Twitter

// Check out https://apps.twitter.com for more info on getting key & secret!
let key = "" //Insert key here!