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Update from upstream, remove unused methods
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@dduugg
dduugg committed Jan 10, 2024
1 parent 5e75601 commit efe9d2c
Showing 1 changed file with 7 additions and 216 deletions.
223 changes: 7 additions & 216 deletions Library/Homebrew/extend/enumerable.rb
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Original file line number Diff line number Diff line change
@@ -1,49 +1,6 @@
# frozen_string_literal: true

module Enumerable
INDEX_WITH_DEFAULT = Object.new
private_constant :INDEX_WITH_DEFAULT

# Enumerable#sum was added in Ruby 2.4, but it only works with Numeric elements
# when we omit an identity.

# :stopdoc:

# We can't use Refinements here because Refinements with Module which will be prepended
# doesn't work well https://bugs.ruby-lang.org/issues/13446
alias :_original_sum_with_required_identity :sum
private :_original_sum_with_required_identity

# :startdoc:

# Calculates a sum from the elements.
#
# payments.sum { |p| p.price * p.tax_rate }
# payments.sum(&:price)
#
# The latter is a shortcut for:
#
# payments.inject(0) { |sum, p| sum + p.price }
#
# It can also calculate the sum without the use of a block.
#
# [5, 15, 10].sum # => 30
# ['foo', 'bar'].sum # => "foobar"
# [[1, 2], [3, 1, 5]].sum # => [1, 2, 3, 1, 5]
#
# The default sum of an empty list is zero. You can override this default:
#
# [].sum(Payment.new(0)) { |i| i.amount } # => Payment.new(0)
def sum(identity = nil, &block)
if identity
_original_sum_with_required_identity(identity, &block)
elsif block_given?
map(&block).sum(identity)
else
inject(:+) || 0
end
end

# Convert an enumerable to a hash, using the block result as the key and the
# element as the value.
#
Expand All @@ -62,199 +19,33 @@ def index_by
end
end

# Convert an enumerable to a hash, using the element as the key and the block
# result as the value.
#
# post = Post.new(title: "hey there", body: "what's up?")
#
# %i( title body ).index_with { |attr_name| post.public_send(attr_name) }
# # => { title: "hey there", body: "what's up?" }
#
# If an argument is passed instead of a block, it will be used as the value
# for all elements:
#
# %i( created_at updated_at ).index_with(Time.now)
# # => { created_at: 2020-03-09 22:31:47, updated_at: 2020-03-09 22:31:47 }
def index_with(default = INDEX_WITH_DEFAULT)
if block_given?
result = {}
each { |elem| result[elem] = yield(elem) }
result
elsif default != INDEX_WITH_DEFAULT
result = {}
each { |elem| result[elem] = default }
result
else
to_enum(:index_with) { size if respond_to?(:size) }
end
end

# Returns +true+ if the enumerable has more than 1 element. Functionally
# equivalent to <tt>enum.to_a.size > 1</tt>. Can be called with a block too,
# much like any?, so <tt>people.many? { |p| p.age > 26 }</tt> returns +true+
# if more than one person is over 26.
def many?
cnt = 0
if block_given?
any? do |element|
cnt += 1 if yield element
cnt > 1
end
else
any? { (cnt += 1) > 1 }
end
end

# Returns a new array that includes the passed elements.
#
# [ 1, 2, 3 ].including(4, 5)
# # => [ 1, 2, 3, 4, 5 ]
#
# ["David", "Rafael"].including %w[ Aaron Todd ]
# # => ["David", "Rafael", "Aaron", "Todd"]
def including(*elements)
to_a.including(*elements)
end

# The negative of the <tt>Enumerable#include?</tt>. Returns +true+ if the
# collection does not include the object.
def exclude?(object)
!include?(object)
end

# Returns a copy of the enumerable excluding the specified elements.
#
# ["David", "Rafael", "Aaron", "Todd"].excluding "Aaron", "Todd"
# # => ["David", "Rafael"]
#
# ["David", "Rafael", "Aaron", "Todd"].excluding %w[ Aaron Todd ]
# # => ["David", "Rafael"]
#
# {foo: 1, bar: 2, baz: 3}.excluding :bar
# # => {foo: 1, baz: 3}
def excluding(*elements)
elements.flatten!(1)
reject { |element| elements.include?(element) }
end

# Alias for #excluding.
def without(*elements)
excluding(*elements)
end

# Extract the given key from each element in the enumerable.
#
# [{ name: "David" }, { name: "Rafael" }, { name: "Aaron" }].pluck(:name)
# # => ["David", "Rafael", "Aaron"]
#
# [{ id: 1, name: "David" }, { id: 2, name: "Rafael" }].pluck(:id, :name)
# # => [[1, "David"], [2, "Rafael"]]
def pluck(*keys)
if keys.many?
map { |element| keys.map { |key| element[key] } }
else
key = keys.first
map { |element| element[key] }
end
end

# Extract the given key from the first element in the enumerable.
#
# [{ name: "David" }, { name: "Rafael" }, { name: "Aaron" }].pick(:name)
# # => "David"
#
# [{ id: 1, name: "David" }, { id: 2, name: "Rafael" }].pick(:id, :name)
# # => [1, "David"]
def pick(*keys)
return if none?

if keys.many?
keys.map { |key| first[key] }
else
first[keys.first]
end
end

# Returns a new +Array+ without the blank items.
# Uses Object#blank? for determining if an item is blank.
#
# [1, "", nil, 2, " ", [], {}, false, true].compact_blank
# # => [1, 2, true]
# [1, "", nil, 2, " ", [], {}, false, true].compact_blank
# # => [1, 2, true]
#
# Set.new([nil, "", 1, 2])
# # => [2, 1] (or [1, 2])
# Set.new([nil, "", 1, false]).compact_blank
# # => [1]
#
# When called on a +Hash+, returns a new +Hash+ without the blank values.
#
# { a: "", b: 1, c: nil, d: [], e: false, f: true }.compact_blank
# #=> { b: 1, f: true }
# { a: "", b: 1, c: nil, d: [], e: false, f: true }.compact_blank
# # => { b: 1, f: true }
def compact_blank
reject(&:blank?)
end
end

class Hash
# Hash#reject has its own definition, so this needs one too.
def compact_blank #:nodoc:
def compact_blank # :nodoc:
reject { |_k, v| v.blank? }
end

# Removes all blank values from the +Hash+ in place and returns self.
# Uses Object#blank? for determining if a value is blank.
#
# h = { a: "", b: 1, c: nil, d: [], e: false, f: true }
# h.compact_blank!
# # => { b: 1, f: true }
def compact_blank!
# use delete_if rather than reject! because it always returns self even if nothing changed
delete_if { |_k, v| v.blank? }
end
end

class Range #:nodoc:
# Optimize range sum to use arithmetic progression if a block is not given and
# we have a range of numeric values.
def sum(identity = nil)
if block_given? || !(first.is_a?(Integer) && last.is_a?(Integer))
super
else
actual_last = exclude_end? ? (last - 1) : last
if actual_last >= first
sum = identity || 0
sum + (actual_last - first + 1) * (actual_last + first) / 2
else
identity || 0
end
end
end
end

# Using Refinements here in order not to expose our internal method
using Module.new {
refine Array do
alias :orig_sum :sum
end
}

class Array #:nodoc:
# Array#sum was added in Ruby 2.4 but it only works with Numeric elements.
def sum(init = nil, &block)
if init.is_a?(Numeric) || first.is_a?(Numeric)
init ||= 0
orig_sum(init, &block)
else
super
end
end

# Removes all blank elements from the +Array+ in place and returns self.
# Uses Object#blank? for determining if an item is blank.
#
# a = [1, "", nil, 2, " ", [], {}, false, true]
# a.compact_blank!
# # => [1, 2, true]
def compact_blank!
# use delete_if rather than reject! because it always returns self even if nothing changed
delete_if(&:blank?)
end
end

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