Jacke

Personal Development

The Passionate Programmer

Ruby

The Ruby Programming Language - David Flanagan, Yukihiro Matsumoto

Programming Ruby 1.9 - Dave Thomas, Chad Fowler, Andy Hunt

Jacke

HOW TO USE
==========

  COMMAND LINE
  =============
spec --color --format specdoc user.rspec

  RAILS
  =============
./script/generate rspec_model User

Jacke

# RSpec 2.0 syntax Cheet Sheet

# Задаем спек внутри модуля Игрок, рспек автоматически подхватит Player::MovieList как переменную 'subject' (смотри ниже)
module Player
  describe MovieList, "с необязательным описанием" do
  	  
	  it "этот пример находится в ожидании(pending) поэтому можно написать его побырому"
	  
	  it "это уже рабочий пример, но он не будет красным а желтым, потому что мы его замарозим" do
		pending("пендинг все обрывает, но не помечает красным")

Jacke

--- 
rspec_shoulda: |
  Shoulda Rspec Matchers
    For more information on rspec, rspec-rails, shoulda
      $ cheat rspec
      $ cheat rspec_on_rails_matchers
      $ cheat shoulda
    
  Models Matchers
    Data

Jacke

;                    Stumbling towards Y (Clojure Version) 
; 
; (this tutorial can be cut & pasted into your IDE / editor)  
; 
; The applicative-order Y combinator is a function that allows one to create a 
; recursive function without using define. 
; This may seem strange, because usually a recursive function has to call 
; itself, and thus relies on itself having been defined. 
; 
; Regardless, here we will stumble towards the implementation of the Y combinator. 

Jacke

;; A Simplifier for all Expressions

;; Example:
;; (simplify '(* 1 (+ x (- y y)))) ;=> x
;; (simplify '(and a (and (and) b))) ;=> (and a b)

;; See section 4.4, "Syntactic Abstraction" of Norvig and Pitman's
;; "Tutorial on Good Lisp Programming Style":
;; http://norvig.com/luv-slides.ps

Jacke

;-----------------------------------------------------------------------------------
; 1 - example of simple operations
;-----------------------------------------------------------------------------------
; arithmatic operations
(+ 1 2)
(* 2 3)
(/ 8 2)
(> 4 3)
(= 4 6)

Jacke

For each Ruby module/class, we have Ruby methods on the left and the equivalent
Clojure functions and/or relevant notes are on the right.

For clojure functions, symbols indicate existing method definitions, in the 
clojure namespace if none is explicitly given.  clojure.contrib.*/* functions can
be obtained from http://github.com/kevinoneill/clojure-contrib/tree/master,
ruby-to-clojure.*/* functions can be obtained from the source files in this
gist.

If no method symbol is given, we use the following notation:

Jacke

(ns sunil.curry)

(defn partial+
  "Takes a function f and fewer than the normal arguments to f, and
  returns a fn that takes a variable number of additional args. When
  called, the returned function calls f with args + additional args.
  differs from the core version in that it works on just one argument."
  {:added "1.0"}
  ([f] f)
  ([f arg1]

Jacke

(defmacro def-curry-fn [name args & body]
  {:pre [(not-any? #{'&} args)]}
  (if (empty? args)
    `(defn ~name ~args ~@body)
    (let [rec-funcs (reduce (fn [l v]
                              `(letfn [(helper#
                                         ([] helper#)
                                         ([x#] (let [~v x#] ~l))
                                         ([x# & rest#] (let [~v x#]
                                                         (apply (helper# x#) rest#))))]