Login Register

each_with_object

enum.each_with_object(obj) { |(*args), memo_obj| ... } â obj
enum.each_with_object(obj) â an_enumerator

Instance Public methods

Iterates the given block for each element with an arbitrary object given, and returns the initially given object.

If no block is given, returns an enumerator.

evens = (1..10).each_with_object([]) { |i, a| a << i*2 }
#=> [2, 4, 6, 8, 10, 12, 14, 16, 18, 20]

doc_ruby_on_rails

2025-01-10 15:47:30

Comments

Leave a Comment

Please login to continue.

Popular Articles

each_with_object e.with_object(obj) {|(*args), obj| ... }e.with_object(obj) Instance Public methods Iterates the given block for each element with an ar

with_object with_object(obj) Instance Public methods see Enumerator#with_object.

with_object e.with_object(obj) {|(*args), obj| ... }e.with_object(obj) Instance Public methods Iterates the given block for each element with an arb

each_with_index e.each_with_index {|(*args), idx| ... }e.each_with_index Instance Public methods Same as #with_index, i.e. there is no starting offset.

each_with_index each_with_index(which = :all) Instance Public methods Same as each, but the row index and column index in addition to the element Matrix