Arrays: create changed copy of array

I have an array:

array1 = [1,2,3,4,5,:value => 'value']

I want to crea开发者_Python百科te second array, who is the copy of first array minus :value element (addition: i don't know position of element exactly)

#expected result
array1 = [1,2,3,4,5,:value => 'value']
array2 = [1,2,3,4,5]

#my failure attempt
array2 = array1.delete(:value) # => nil

How can i do this?

You can try this

array2 = array1.reject{|a| a.is_a?(Hash) && a[:value]}

as @mu is too short said this will be safer:

array2 = array1.reject{|a| a.is_a?(Hash) && a.has_key?(:value)}

Or

array2 = array1 - {:value => "value"}

If your array has a hash as one of its members (array1 = [1,2,3,4,5,{:value => 'value'}]) and you want to get rid of that member:

array2 = array1.reject{|a| a.is_a?(Hash)} # => array2 will equal [1,2,3,4,5]

If you want to get rid of a member that is a Hash and has a key of :value, you could add that to the reject block:

array2 = array1.reject{|a| a.is_a?(Hash) && a.key?('value')}

Seems easy :

array2 = array1[0..-2]

Or if you aren't sure that the array has a :value key at the end and be sure that only :value is deleted :

array1.delete(:value)

Another clean solution IMHO is to pop if last element is a hash :

array1.pop if array1.last.is_a?(Hash)