File: shift.rb

package info (click to toggle)
ruby-backports 3.25.3-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 4,912 kB
  • sloc: ruby: 11,759; makefile: 6
file content (14 lines) | stat: -rw-r--r-- 474 bytes parent folder | download | duplicates (6) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
 
unless ([1].shift(1) rescue false)
  class Array
    require 'backports/tools/alias_method_chain'
    require 'backports/tools/arguments'

    def shift_with_optional_argument(n = Backports::Undefined)
      return shift_without_optional_argument if n == Backports::Undefined
      n = Backports.coerce_to_int(n)
      raise ArgumentError, "negative array size" if n < 0
      slice!(0, n)
    end
    Backports.alias_method_chain self, :shift, :optional_argument
  end
end