Array.delete

Signature

array.delete(object)                #=> object or nil
array.delete(object) {|o| block }   #=> object or returned_block_result

array.delete(object) removes all occurances of object from array and
returns object if object is found in array or it returns nil if
object is not found in array. If block is given and object is not
found in array then the the block’s returned results is returned
by array.delete.

Examples

a = [1,2,3,4,5,6,7]       #=> [1, 2, 3, 4, 5, 6, 7]
a.delete(7)               #=> 7
a                         #=> [1, 2, 3, 4, 5, 6]
a.delete('foo')           #=> nil

a = [7,1,2,3,7,4,5,6,7]   #=> [7, 1, 2, 3, 7, 4, 5, 6, 7]
a.delete(7)               #=> 7
a                         #=> [1, 2, 3, 4, 5, 6]

a.delete('foo') {false}   #=> false

a.delete('foo') do |item|
  "'#{item}' not found"
end                       #=> "'foo' not found"

Documentation Reference

Ruby version 1.8.6

www.ruby-doc.org : Array.delete