Convert named matches in MatchData to Hash

Question

I have a rather simple regexp, but I wanted to use named regular expressions to make it cleaner and then iterate over results.

Testing string:

testing_s         


        

Answer 1

If you need a full Hash:

captures = Hash[ dimensions.names.zip( dimensions.captures ) ]
p captures
#=> {"width"=>"111", "height"=>"222", "depth"=>"333"}

If you just want to iterate over the name/value pairs:

dimensions.names.each do |name|
  value = dimensions[name]
  puts "%6s -> %s" % [ name, value ]
end
#=>  width -> 111
#=> height -> 222
#=>  depth -> 333

Alternatives:

dimensions.names.zip( dimensions.captures ).each do |name,value|
  # ...
end

[ dimensions.names, dimensions.captures ].transpose.each do |name,value|
  # ...
end

dimensions.names.each.with_index do |name,i|
  value = dimensions.captures[i]
  # ...
end