kjnilsson

//invaluable for all those Choice<'a, exn> flows
let exnf f = Printf.ksprintf (fun s -> exn s) f

//combine paths
let (</>) x y = System.IO.Path.Combine(x, y)

//allows you to pattern match on values in the current scope rather than just literals
let (|Eq|_|) expected value =
    if expected = value then Some ()
    else None

aymanosman

import Data.Maybe
import Data.Monoid
import Control.Applicative

-- Mostly stolen from an answer found posted on reddit.
-- This formulation achieves a high level of modularity and clarity.
-- It is modular with respect to adding more numbers to fizz and buzz against,
-- and captures the idea of `show`ing the number by default elegantly.
t m s n = if mod n m == 0 then Just s else Nothing
-- instance Applicative ((->) a) where (<*>) f g x = f x (g x)

folsen

{-# LANGUAGE DeriveDataTypeable, OverloadedStrings #-}

module Main where

import qualified Data.ByteString.Lazy.Char8 as L
import Control.Monad.IO.Class (liftIO)
import Control.Monad (msum, mzero)
import Data.Data (Data, Typeable)
import Data.Maybe (fromJust)
import Data.Aeson

mythz

/*
With no other C# or config other than OrmLite DB config in AppHost below - this web service provides all the screenshots attached, out-of-the-box, for free. 

container.Register<IDbConnectionFactory>(
  new OrmLiteConnectionFactory(ConfigUtils.GetConnectionString("AppDb"), //ConnectionString in Web.Config
    SqlServerOrmLiteDialectProvider.Instance) {
      ConnectionFilter = x => new ProfiledDbConnection(x, Profiler.Current) });


 -- Code-first Simplicity at Great Speed - http://www.servicestack.net/benchmarks/

gregoryyoung

Greg's Stop Loss Kata

Testing is very hard when time is involved ...

A trailing stop loss is a term used in financial trading. For a very in depth explanation you can read here http://www.investopedia.com/articles/trading/03/080603.asp and http://en.wikipedia.org/wiki/Order_(exchange)#Stop_orders

However we do not need a huge amount of background in order to do the kata as we are going to limit the problem a bit.

The general idea is that when you buy into a stock at a price say $10. You want it to automatically get sold if the stock goes below $9 (-$1). If we use the term "trailing" that means that id the price goes up to $11 then the sell point becomes $10.

madrobby

# before this file is loaded, a locale should be set:
# 
# In a browser environment, you can use:
# ```<script>__locale='en';</script>```
#
# In a server environment (specifically node.js):
# ```global.__locale = 'en';```

# normalize in-app locale string to "en" or "de-AT"
parts = @__locale.split('-')