teh

defined("flask", "test-module").

scope("module", "NONE").
scope("render", "test-module").
scope("render", "render-sub").

get_d(Name, CurrentScope) :- defined(Name, CurrentScope).
get_d(Name, PS) :- get_d(Name, PS), scope(CurrentScope, PS).

get_d("flask", A)?

teh

/nix/store/01fcvccrfxallx8nvl37hm2wn4s8m5d2-binutils-2.23.1.drv
/nix/store/01fcw5v5kqil2bqz0n6rqrj8ajdjg26h-ncurses-5.9.drv
/nix/store/027jx787j79skn98avxmfg4n17i4m0d4-distutils.cfg.drv
/nix/store/02rwxn991y0r5qjx3is7r5aj7i24lrb8-bash43-015.drv
/nix/store/06n2pfr1h9b9xs3gcyjbcccv0k94329m-llvm-3.5.0.drv
/nix/store/094mng1j45bxnr4hz8awinhq4q0qxhaf-bash43-022.drv
/nix/store/0ipg6zpc6p7s2cqgmv8c1hfzw2m0gfm5-bash43-004.drv
/nix/store/0lc1bacgrp6k5yn3py9w7zfilf1s48jp-gpm-1.20.7.drv
/nix/store/0p1zbmsc0gjdx5d9389zh9ypknrnbrj1-bash43-032.drv
/nix/store/0vwbsqixj92pppgg5jai2lqikk3wjk5w-patchelf-0.8.drv

teh

include "globals.mzn";

set of 1..5: a = 1..5; % Nicola, Ed, David, Nick, Nigel
set of 1..5: b = 1..5; % Guinea, Squirrel, Pitbull, Badger, Fish
set of 1..5: c = 1..5; % Moccachino, FlatWhite, Chai, Double Espresso, Decaf
set of 1..5: d = 1..5; % Car, Bike, Train, Plane, Walk
set of 1..5: e = 1..5; % Tartan, Paisly, Gingham, Striped, Polka

array[a] of var a: A;
array[b] of var b: B;

teh

{ stdenv, fetchurl, buildPythonPackage, pythonPackages, zeromq3, pyqt4 ? null
, notebookSupport ? true   # ipython notebook
, qtconsoleSupport ? true  # ipython qtconsole
, pylabSupport ? true      # ipython --pylab    (backend: agg - no gui, just file)
, pylabQtSupport ? true    # ipython --pylab=qt (backend: Qt4Agg - plot to window)
}:

# ipython qtconsole works with both pyside and pyqt4. But ipython --pylab=qt
# only works with pyqt4 (at least this is true for ipython 0.13.1). So just use
# pyqt4 for both.

teh

def get_records():
    df = pandas.read_json('1.json')
    df = pandas.io.json.json_normalize(df['accidents'])
    for _, row in df.iterrows():
        for c in row['casualties']:
            for i in row['involved']:
                row['caualty_severity'] = c['severity']
                row['caualty_gender'] = c['gender']
                row['caualty_class'] = c['class']
                row['caualty_vehicle'] = c.get('vehicle', 'unknonwn')

teh

Backwards compatible configuration

If some record can change it's a good idea to use a sum type, e.g. you start out with your new program like this:

data Wibble = WibbleV0 { port :: Int, name :: String }

A year later you have a new feature that requires more info. Now you

teh

with (import <nixpkgs> {}).pkgs;

let
  importDeps = stdenv.mkDerivation {
      name = "importDeps";
      src = fetchurl {
         url = "file:///home/tom/testbed/nix-import-stuff/ext.zip";
         sha256 = "0ivhsn2pp1sgzsywnd2x673ff5q62v9715kkw5vyf63rfh7fw9h4";
      };
      phases = "unpackPhase installPhase";

teh

module Main where

import Python
import Test.QuickCheck
import Test.QuickCheck.Monadic


square :: Int -> IO Int
square = defVV "export = lambda x: x * x"

teh

with (import <nixpkgs> {}).pkgs;
let monad-control = pkgs.haskellngPackages.callPackage ./monad-control-0.3.nix {};
    pkg = haskellngPackages.callPackage
            ({ mkDerivation, base, monad-control, stdenv, yesod }:
             mkDerivation {
               pname = "yesod-nix";
               version = "0.1.0.0";
               src = ./.;
               isLibrary = false;
               isExecutable = true;

teh

{-# LANGUAGE TemplateHaskell #-}
module ElmDerive where

import Language.Haskell.TH

makeElm :: Name -> Q [Dec]
makeElm t = do
  -- Get list of constructors for type t
  TyConI (DataD _ _ _ constructors _)  <- reify t
  x <- [d| x = "hi" |]