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*Cis194.Hw.SExpr> :r
[2 of 2] Compiling Cis194.Hw.SExpr  ( src/Cis194/Hw/SExpr.hs, interpreted )

src/Cis194/Hw/SExpr.hs:84:38:
    Couldn't match type `SExpr' with `Atom'
    Expected type: [SExpr] -> Atom
      Actual type: [SExpr] -> SExpr
    In the first argument of `pure', namely `(Comb)'
    In the first argument of `(<*>)', namely `pure (Comb)'
    In the second argument of `(<|>)', namely

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-- Ex. 2 - implement an Applicative instance for Parser
--
-- A. pure a represents the parser which consumes no input
--    and successfully returns a result of a.
--
-- B. p1 <*> p2 represents the parser which first runs p1
--    (which will consume some input and produce a
--    function), <----- doesn't this produce a Maybe (a, String) ????

--    ...then passes the remaining input to p2

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import Debug.Trace

div' :: Integer -> Integer -> Integer
div' x y
  | trace ("x is: " ++ (show x) ++ " and y is: " ++ (show y)) False = undefined
  | otherwise = x `div` y
  
-- guards are evaluated from top to bottom until a match is found, so we fire off
-- our call to trace (which returns False) and move on to the next guard (which is
-- our real implementation). 

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#!/usr/bin/env python
import barrister
import urllib2
import sys

password_mgr = urllib2.HTTPPasswordMgrWithDefaultRealm()
password_mgr.add_password(None, 'http://localhost:3000/','admin','admin')
auth_handler = urllib2.HTTPBasicAuthHandler(password_mgr)

trans        = barrister.HttpTransport("http://localhost:3000/v1/todos", handlers=[auth_handler])

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#!/usr/bin/env python
import barrister
import urllib2
import sys

password_mgr = urllib2.HTTPPasswordMgrWithDefaultRealm()
password_mgr.add_password(None, 'http://localhost:3000/','admin','admin')
auth_handler = urllib2.HTTPBasicAuthHandler(password_mgr)

trans        = barrister.HttpTransport("http://localhost:3000/v1/todos", handlers=[auth_handler])

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// initialize the API client

function initApp(callback) {
  function transport(req, callback) {
    var settings = {
      type: 'POST',
      contentType: 'application/json',
      data: JSON.stringify(req),
      beforeSend: function(xhr) {
        // set the Authorization header

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package main

import (
  "fmt"
  "github.com/coopernurse/barrister-go"
  "net/http"
  t "./todos"
  s "./store"
)

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#!/usr/bin/env python

import barrister
from bottle import run, post, request
from store import Store, RecordNotFound, UserDataInvalid, MaxTodosExceeded
from functools import wraps
import sys

def guard(*exceptions):
  errors = {

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// initialize the API client

function initApp(callback) {
  function transport(req, callback) {
    var settings = {
      type: 'POST',
      contentType: 'application/json',
      data: JSON.stringify(req),
      beforeSend: function(xhr) {
        // set the Authorization header

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// initialize the API client

function initApp(callback) {
  function transport(req, callback) {
    var settings = {
      type: 'POST',
      contentType: 'application/json',
      data: JSON.stringify(req),
      beforeSend: function(xhr) {
        // set the Authorization header