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plusor/花括号和 do..end 关系.md

Created July 29, 2013 14:26
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花括号和 do..end 关系
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花括号和 do..end 关系.md
在Programming Ruby 书中介绍block的时候提到过. 花括号比do..end绑定更为严密.

花括号

puts (1..10).map {|i| i * 2}
2
4
6
8
10
12
14
16
18
20

do..end

puts (1..10).map do |i|  
i * 2 
end

#<Enumerator:0x007fa0e298a8c0>
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