yihuang

import pyximport; pyximport.install()

class PurePlayer(object):
    def __init__(self):
        self.__age = 0

    def set_age(self, value):
        self.__age = value

    def get_age(self):

yihuang

{-# LANGUAGE ExistentialQuantification, GeneralizedNewtypeDeriving #-}
import System.FilePath (FilePath, (</>))
import System.Directory (getDirectoryContents, doesFileExist)
import Control.Monad
import Control.Monad.State
import Control.Monad.Reader
import Control.Monad.Writer

type St = Int
data Conf = Conf {

yihuang

{-# LANGUAGE FlexibleInstances, TypeSynonymInstances, RankNTypes, OverloadedStrings #-}
import Data.Data
import Data.Aeson hiding (toJSON, fromJSON)
import Data.Aeson.Generic
import Data.Attoparsec
import qualified Data.ByteString as B

data MethodCall = MethodCall String [Value]
                deriving (Eq, Show)

yihuang

diff --git a/bootstrap.sh b/bootstrap.sh
index b9950e7..105b693 100644
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -19,7 +19,7 @@ CURL=${CURL:-curl}
 FETCH=${FETCH:-fetch}
 TAR=${TAR:-tar}
 GUNZIP=${GUNZIP:-gunzip}
-SCOPE_OF_INSTALLATION="--user"
+SCOPE_OF_INSTALLATION="--global"

yihuang

import Prelude hiding (catch)
import System.Environment
import System.IO
import System.Directory
import System.FilePath
import Control.Exception
import Control.Applicative
import Control.Monad
import Data.List

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import Prelude hiding (lookup)
import Data.Maybe (fromMaybe)
import qualified Data.Map as M
import Control.Monad (join)

data Trie c a = Trie
                  (Maybe a) -- node may or may not contain a value.
                  (M.Map c (Trie c a))
    deriving (Show)

yihuang

import Criterion.Main

next :: Int -> Int
next n | even n = n `div` 2
       | otherwise = 3*n+1

len :: Int -> Int
len = length . takeWhile (/=1) . iterate next

len' :: Int -> Int -> Int

yihuang

{-# LANGUAGE BangPatterns, ViewPatterns #-}
import System.Environment (getArgs)
import Control.Monad
import Control.Monad.ST
import Data.STRef
import GHC.Int

fib1 :: Int -> Integer
fib1 n = fibs !! n
  where fibs = 1:1:zipWith (+) fibs (tail fibs)

yihuang

{-# LANGUAGE BangPatterns #-}
module Main (fib1, fib2, fib3, fib4, main) where
import Control.Monad
import Control.Monad.ST
import Data.STRef
import Criterion.Main

fib1 :: Int -> Integer
fib1 n = fst $ fib' n
  where fib' 0 = (1, 1)

yihuang

module DList where

import Prelude hiding (reverse)
import Prelude as P

{-
 - provide whatever list operation in O(1) time complexity ...
 - only toList do all the hard works.
 -}