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CSV::Row does not have .to_h #2315

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mjc opened this issue Dec 12, 2014 · 2 comments
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CSV::Row does not have .to_h #2315

mjc opened this issue Dec 12, 2014 · 2 comments
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@headius
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core JRuby 9000 ruby 2.0-2.2
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JRuby 9.0.0.0-pre1

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@mjc
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mjc commented Dec 12, 2014

jruby 1.7.17

CSV.read(file_name,headers: true).first.to_h
NoMethodError: undefined method `to_h' for #<CSV::Row:0x68ab0936>

jruby 9k (7a66d8b)

CSV.read(file_name,headers: true).first.to_h
NoMethodError: undefined method `to_h' for #<CSV::Row:0xb4a2758>

This works on MRI 2.1.0 and possibly older versions as well - it creates a hash with the headers of the CSV as the keys.
@headius
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headius commented Dec 15, 2014

This does not work in MRI 1.9 or 2.0 either, so it appears to be a change in 2.1. It won't be fixed in JRuby 1.7.x, but we will fix it in 9k (which will be 2.2 compatible).

We run a direct copy of csv.rb from MRI, so there's something else at play here.

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headius commented Dec 15, 2014

Enumerable gained to_h in 2.1. Fixing.

@headius headius added this to the JRuby 9.0.0.0 milestone Dec 15, 2014
@headius headius self-assigned this Dec 15, 2014
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