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# Examples from _why's Potion, the Readme and "Potion: A Short Pamphlet".
# 5 times: "Odelay!" print.
print "Odelay!" for i in [1..5]
# add = (x, y): x + y.
# add(2, 4) string print
add = (x, y) -> x + y
print add 2, 4
# loop: 'quaff' print.
loop print 'quaff'
# ('cheese', 'bread', 'mayo') at (1) print
print ['cheese', 'bread', 'mayo'][1]
# (language='Potion', pointless=true) at (key='language') print
print {language: 'Potion', pointless: true}['language']
# minus = (x, y): x - y.
# minus (y=10, x=6)
minus = (x, y) -> x - y
minus 6, 10
# foods = ('cheese', 'bread', 'mayo')
# foods (2)
foods = ['cheese', 'bread', 'mayo']
foods[2]
# (dog='canine', cat='feline', fox='vulpine') each (key, val):
# (key, ' is a ', val) join print.
for key, val of {dog: 'canine', cat: 'feline', fox: 'vulpine'}
print "#{key} is a #{val}"
# Person = class: /name, /age, /sex.
# Person print = ():
# ('My name is ', /name, '.') join print.
class Person
print: ->
print "My name is #{@name}."
# p = Person ()
# p /name string print
p = new Person
print p.name
# Policeman = Person class (rank): /rank = rank.
# Policeman print = ():
# ('My name is ', /name, ' and I'm a ', /rank, '.') join print.
#
# Policeman ('Constable') print
class Policeman extends Person
(@rank) ->
print: ->
print "My name is #{@name} and I'm a #{@rank}."
print new Policeman 'Constable'
# app = [window (width=200, height=400)
# [para 'Welcome.', button 'OK']]
# app first name
app =
window:
width: 200
height: 200
para: 'Welcome.'
button: 'OK'
app.window
# x = 1
# y = 2
#
# x = 1, y = 2
x = 1
y = 2
x = 1; y = 2
# table = (language='Potion'
# pointless=true)
table =
language: 'Potion'
pointless: yes
# # this foul business...
# String length = (): 10.
# this foul business...
String::length = -> 10
# block = :
# 'potion' print.
block = ->
print 'potion'
# if (age > 100): 'ancient'.
if age > 100 then 'ancient'
# author =
# if (title == 'Jonathan Strange & Mr. Norrell'):
# 'Susanna Clarke'.
# elsif (title == 'The Star Diaries'):
# 'Stanislaw Lem'.
# elsif (title == 'The Slynx'):
# 'Tatyana Tolstaya'.
# else:
# '... probably Philip K. Dick'.
switch author
when 'Jonathan Strange & Mr. Norrell'
'Susanna Clarke'
when 'The Star Diaries'
'Stanislaw Lem'
when 'The Slynx'
'Tatyana Tolstaya'
else
'... probably Philip K. Dick'
# count = 8
# while (count > 0):
# 'quaff' print
# count--.
count = 8
while count > 0
print 'quaff'
count--
# 1 to 5 (a):
# a string print.
print a for a in [1..5]
# if (3 ?gender):
# "Huh? Numbers are sexed? That's amazing." print.
if 3.gender?
print "Huh? Numbers are sexed? That's amazing."
# HomePage get = (url):
# session = url query ? at ('session').
HomePage::get = (url) ->
session = url.query?.session
# BTree = class: /left, /right.
# b = BTree ()
# b /left = BTree ()
# b /right = BTree ()
BTree = ->
b = new BTree
b.left = new BTree
b.right = new BTree
# BTree = class: /left, /right.
# b = BTree ()
#
# if (b ? /left):
# 'left path found!' print.
BTree = ->
b = new BTree
print 'left path found!' if b.left?
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