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Versions: 15
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Contents
module ActiveSupport #:nodoc:
module CoreExtensions #:nodoc:
module Array #:nodoc:
module RandomAccess
# This method is deprecated because it masks Kernel#rand within the Array class itself,
# which may be used by a 3rd party library extending Array in turn. See
#
# https://rails.lighthouseapp.com/projects/8994-ruby-on-rails/tickets/4555
#
def rand # :nodoc:
ActiveSupport::Deprecation.warn 'Array#rand is deprecated and will be removed in Rails 3. Use Array#sample instead', caller
sample
end
# Returns a random element from the array.
def random_element # :nodoc:
ActiveSupport::Deprecation.warn 'Array#random_element is deprecated and will be removed in Rails 3. Use Array#sample instead', caller
sample
end
# Backport of Array#sample based on Marc-Andre Lafortune's http://github.com/marcandre/backports/
def sample(n=nil)
return self[Kernel.rand(size)] if n.nil?
n = n.to_int
rescue Exception => e
raise TypeError, "Coercion error: #{n.inspect}.to_int => Integer failed:\n(#{e.message})"
else
raise TypeError, "Coercion error: #{n}.to_int did NOT return an Integer (was #{n.class})" unless n.kind_of? ::Integer
raise ArgumentError, "negative array size" if n < 0
n = size if n > size
result = ::Array.new(self)
n.times do |i|
r = i + Kernel.rand(size - i)
result[i], result[r] = result[r], result[i]
end
result[n..size] = []
result
end unless method_defined? :sample
end
end
end
end
Version data entries
15 entries across 15 versions & 4 rubygems