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Contents
module Datadog
module Core
module Utils
# Helper methods for safer dup
module SafeDup
if RUBY_VERSION < '2.2' # nil.dup only fails in Ruby 2.1
# Ensures #initialize can call nil.dup safely
module RefineNil
refine NilClass do
def dup
self
end
end
end
using RefineNil
end
# String#+@ was introduced in Ruby 2.3
if String.method_defined?(:+@) && String.method_defined?(:-@)
def self.frozen_or_dup(v)
# If the string is not frozen, the +(-v) will:
# - first create a frozen deduplicated copy with -v
# - then it will dup it more efficiently with +v
v.frozen? ? v : +(-v)
end
def self.frozen_dup(v)
-v if v
end
else
def self.frozen_or_dup(v)
v.frozen? ? v : v.dup
end
def self.frozen_dup(v)
v.frozen? ? v : v.dup.freeze
end
end
end
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems