Create Struct from a String?

Question

I need to create a Struct with multiple fields (based on a long string). Here is what I have so far:

s = "a1|b2|c3|"
a = s.split("|")
b = []
a.each { |e| 
  b.push(e.to_sym)
}

Str = Struct.new(*b)

Anyway to make it shorter?

Whenever it's a question about "how do I improve this", that's a flag that the question probably belongs on codereview.stackexchange.com. — the Tin Man
– the Tin Man, Commented Dec 19, 2013 at 3:11

sawa · Accepted Answer · 2013-12-19 02:58:04Z

2

Here it is:

Str = Struct.new(*"a1|b2|c3|".split("|").map(&:to_sym))

answered Dec 19, 2013 at 2:58

sawa

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Comments

Chuck · Accepted Answer · 2013-12-19 02:59:34Z

1

The pattern b = []; a.each {|e| b << (do something with e) } can always be shortened to a use of map. So:

s = "a1|b2|c3"
b = s.split('|').map {|e| e.to_sym }

Or, even more tersely:

s = "a1|b2|c3"
b = s.split('|').map(&:to_sym)

answered Dec 19, 2013 at 2:59

Chuck

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