Ruby 中的闭包

http://rubyer.me/blog/917/

Ruby:

block = Proc
Proc = code part 代码片断, 与引用部分属于同一个上下文
lambda = noname Method
Method

def a
    sum = 0
    return lambda do |x|
        sum += x
    end
end

pos = a
neg = a

(1.upto(5)).each do |i|
    puts '%d %d' % [pos.call(i),neg.call(-2*i)]
end

#  1 -2
#  3 -6
#  6 -12
#  10 -20
#  15 -30

创建@

2014-09-03

最后修改@

2014-09-03

标签/Tags

Closure 1

相同类目/Categories