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>> o = Object.new | |
=> #<Object:0x1110cdc> | |
>> class << o | |
>> FOO = 'bar' | |
>> end | |
=> "bar" | |
>> class << o; self; end::FOO | |
=> "bar" |
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>> foo = 42 | |
=> 42 | |
>> foo | |
=> 42 | |
>> eval "foo", TOPLEVEL_BINDING | |
NameError: undefined local variable or method `foo' for main:Object | |
from (irb):3:in `eval' | |
>> self | |
=> main |
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>> puts(fun do | |
.. puts("Why hello there") | |
.. puts("How are you doing?") | |
.. 42 | |
.. .to_s()) | |
.. | |
#<Lambda> | |
=> nil |
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>> [x.to_s() | x in 1..10] | |
=> ["1","2","3","4","5","6","7","8","9","10"] | |
# Find Pythagorean triples | |
>> n = 50 | |
=> 50 | |
>> [(a,b,c) | a in 1..n, b in 1..n, c in 1..n, a+b+c <= n, a**2 + b**2 == c**2] | |
=> [(3,4,5),(4,3,5),(5,12,13),(6,8,10),(8,6,10),(8,15,17),(9,12,15),(12,5,13),(12,9,15),(12,16,20),(15,8,17),(16,12,20)] |
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# Yeah, this doesn't look very impressive, except keep in mind it's | |
# compiling to Erlang forms, and Erlang has single assignment semantics | |
# This code now goes through Reia's Static Single Assignment transform, | |
# which lets you rebind variables by mapping them to versions. | |
# | |
# Example (from shell) | |
# >> Foo.bar(42) | |
# => 85 | |
module Foo |
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% Input: | |
[{module,1, | |
{constant,1,'Foo'}, | |
[{function,2, | |
{identifier,2,bar}, | |
[{identifier,2,n}], | |
[{match,3, | |
{identifier,3,n}, | |
{op,{'*',3},{identifier,3,n},{integer,3,2}}}, | |
{match,4, |
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# Another Reia rebinding example, this time using pattern matching | |
module Foo | |
def bar(a, b) | |
(a, b) = (a + 1, b + 2) | |
b = b * 2 | |
a + b |
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>> class Foo | |
.. def get_bar | |
.. @bar | |
.. def set_bar(val) | |
.. @bar = val | |
.. | |
=> ~ok | |
>> f = Foo.start() | |
=> #<Object> | |
>> f.get_bar() |
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require 'rubygems' | |
require 'rev' | |
class MyHttpClient < Rev::HttpClient | |
def on_connect | |
super | |
STDERR.puts "Connected to #{remote_host}:#{remote_port}" | |
end | |
def on_connect_failed |
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/* | |
* Copyright (C) 2007-08 Tony Arcieri | |
* You may redistribute this under the terms of the MIT license. | |
* See LICENSE for details | |
*/ | |
#include <assert.h> | |
#include <string.h> | |
#include <time.h> |
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