Possible to Access the Index in a Hash Each Loop?
I'm Probably Missing Something Obvious, but Is There a Way to Access the Index/Count of the Iteration Inside a Hash Each Loop? Hash = {'Three' => 'One', 'Four'...
I'm probably missing something obvious, but is there a way to access the index/count of the iteration inside a hash each loop?
hash = {'three' => 'one', 'four' => 'two', 'one' => 'three'}
hash.each { |key, value|
# any way to know which iteration this is
# (without having to create a count variable)?
}
2 Answers
If you like to know Index of each iteration you could use .each_with_index
hash.each_with_index { |(key,value),index| ... }
You could iterate over the keys, and get the values out manually:
hash.keys.each_with_index do |key, index|
value = hash[key]
print "key: #{key}, value: #{value}, index: #{index}\n"
# use key, value and index as desired
end
EDIT: per rampion's comment, I also just learned you can get both the key and value as a tuple if you iterate over hash:
hash.each_with_index do |(key, value), index|
print "key: #{key}, value: #{value}, index: #{index}\n"
# use key, value and index as desired
end
Elena Rostova holds a Master's degree in Public Health Journalism. She covers groundbreaking medical research, holistic wellness trends, mental health awareness, and nutritional science.
