How do I sort an array of hashes by a value in the hash?
As per @shteef but implemented with the sort!
variant as suggested:
sort_me.sort! { |x, y| x["value"] <=> y["value"] }
Ruby's sort
doesn't sort in-place. (Do you have a Python background, perhaps?)
Ruby has sort!
for in-place sorting, but there's no in-place variant for sort_by
in Ruby 1.8. In practice, you can do:
sorted = sort_me.sort_by { |k| k["value"] }
puts sorted
As of Ruby 1.9+, .sort_by!
is available for in-place sorting:
sort_me.sort_by! { |k| k["value"]}
Although Ruby doesn't have a sort_by
in-place variant, you can do:
sort_me = sort_me.sort_by { |k| k["value"] }
Array.sort_by!
was added in 1.9.2