ruby使用transpose生成hash

3 years ago

source link: http://blog.grayson.org.cn/blog/2016/11/17/how-to-use-ruby-transpose-convert-to-hash
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ruby使用transpose生成hash

Nov 17, 2016

irb(main):001:0> header = ['key1', 'key2', 'key3', 'key4']
=> ["key1", "key2", "key3", "key4"]
irb(main):002:0> values = ['val1', 'val2', 'val3', 'val4']
=> ["val1", "val2", "val3", "val4"]
irb(main):003:0>  [header, values].transpose
=> [["key1", "val1"], ["key2", "val2"], ["key3", "val3"], ["key4", "val4"]]
irb(main):004:0> transpose_array =  [header, values].transpose
=> [["key1", "val1"], ["key2", "val2"], ["key3", "val3"], ["key4", "val4"]]
irb(main):005:0> Hash[transpose_array]
=> {"key1"=>"val1", "key2"=>"val2", "key3"=>"val3", "key4"=>"val4"}
irb(main):006:0>

https://apidock.com/ruby/Array/transpose

http://railscasts.com/episodes/396-importing-csv-and-excel

此文章短链接: http://dlj.bz/AbOLKI

Posted by grayson Nov 17, 2016 ruby skill

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