skydark

import time

class Timer(object):
    def __init__(self, verbose=False):
        self.verbose = verbose

    def __enter__(self):
        self.start = time.time()
        return self

skydark

// A concurrent prime sieve
// via: http://golang.org/doc/play/sieve.go

package main

// Send the sequence 2, 3, 4, ... to channel 'ch'.
func Generate(ch chan<- int) {
	for i := 2; ; i++ {
		ch <- i // Send 'i' to channel 'ch'.
	}

skydark

-- 这里提供 Lua 中实现 OO 的一种方案：

local _class={}

function class(super)
	local class_type={}
	class_type.ctor=false
	class_type.super=super
	class_type.new=function(...) 
			local obj={}