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Contents
# frozen_string_literal: true
module Datadog
module Core
module Utils
# Refinements for {Hash}.
module Hash
# This refinement ensures modern rubies are allowed to use newer,
# simpler, and more performant APIs.
module Refinement
# Introduced in Ruby 2.4
unless ::Hash.method_defined?(:compact)
refine ::Hash do
def compact
reject { |_k, v| v.nil? }
end
end
end
# Introduced in Ruby 2.4
unless ::Hash.method_defined?(:compact!)
refine ::Hash do
def compact!
reject! { |_k, v| v.nil? }
end
end
end
end
# A minimal {Hash} wrapper that provides case-insensitive access
# to hash keys, without the overhead of copying the original hash.
#
# This class should be used when the original hash is short lived *and*
# each hash key is only accesses a few times.
# For other cases, create a copy of the original hash with the keys
# normalized adequate to your use case.
class CaseInsensitiveWrapper
def initialize(hash)
raise ArgumentError, "must be a hash, but was #{hash.class}: #{hash.inspect}" unless hash.is_a?(::Hash)
@hash = hash
end
def [](key)
return nil unless key.is_a?(::String)
@hash.each do |k, value|
return value if key.casecmp(k) == 0
end
nil
end
def key?(key)
return false unless key.is_a?(::String)
@hash.each_key do |k|
return true if key.casecmp(k) == 0
end
false
end
def empty?
@hash.empty?
end
def length
@hash.length
end
def original_hash
@hash
end
end
end
end
end
end
Version data entries
35 entries across 35 versions & 2 rubygems