AlexeyRaga

Download and install p4merge

• Download the perforce visual tool suite from here: http://www.perforce.com/perforce/downloads/index.html
• Copy only the p4merge.app file into your /Applications/ directory

Setup p4merge as a visual mergetool

AlexeyRaga

scala> trait Assoc[K] { type V ; val value: V }
defined trait Assoc

scala> def mkAssoc[V0](k: String, v: V0): Assoc[k.type] { type V = V0 } =
     |   new Assoc[k.type] { type V = V0 ; val value = v }
mkAssoc: [V0](k: String, v: V0)Assoc[k.type]{type V = V0}

scala> implicit def nameAssoc = mkAssoc("Name", "Mary")
nameAssoc: Assoc[String("Name")]{type V = String}

AlexeyRaga

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Text.RegularExpressions;
 
namespace SemiIdeomaticParsers
{
    public delegate Tuple<T, string> Parser<T>(string value);

AlexeyRaga

Better Git log

git log --graph --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit

create an alias git config --global alias.lg "log --color --graph --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit"

git lg

git lg -p

AlexeyRaga

Tuning Storm+Trident

Tuning a dataflow system is easy:

The First Rule of Dataflow Tuning:
* Ensure each stage is always ready to accept records, and
* Deliver each processed record promptly to its destination

AlexeyRaga

public static void MappingExample()
{
    var averages = Html
        .Download("http://github.com")
        .Select(html => {
                            var links = Html.ParseLinks(html);
                            var averageLength = links.Average(x => x.Length);
                            return String.Format("{0} links found, average length is {1}", links.Count, averageLength);
                        });

AlexeyRaga

//already defined in F# base library, but I wanted to show how simple it is
let (|>) a f = f a

let latestRequest = 
    user
      |> login
      |> clickMenu "Forms"
      |> waitPageLoad
      |> openFilter ["Communication"; "Request"]
      |> results

AlexeyRaga

namespace Topshelf

[<AutoOpen>]
module Topshelf =

  open System
  open Topshelf.HostConfigurators
  open Topshelf.Runtime

  let configureTopShelf f =

AlexeyRaga

{-# LANGUAGE TypeFamilies #-}

import Data.Function (on)
import Control.Applicative

data EventData e = EventData {
    eventId :: Int,
    body :: Event e
}

AlexeyRaga

--- srclib/stdio.in.h.orig	2011-08-07 16:42:06.000000000 +0300
+++ srclib/stdio.in.h	2013-01-10 15:53:03.000000000 +0200
@@ -695,7 +695,9 @@
 /* It is very rare that the developer ever has full control of stdin,
    so any use of gets warrants an unconditional warning.  Assume it is
    always declared, since it is required by C89.  */
-_GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
+#if defined(__GLIBC__) && !defined(__UCLIBC__) && !__GLIBC_PREREQ(2, 16)
+ _GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
+#endif