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107 lines
3.4 KiB
Ruby
107 lines
3.4 KiB
Ruby
# typed: strict
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# frozen_string_literal: true
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class Array
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# Equal to `self[1]`.
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#
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# ### Example
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#
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# ```ruby
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# %w( a b c d e ).second # => "b"
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# ```
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def second = self[1]
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# Equal to `self[2]`.
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#
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# ### Example
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#
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# ```ruby
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# %w( a b c d e ).third # => "c"
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# ```
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def third = self[2]
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# Equal to `self[3]`.
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#
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# ### Example
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#
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# ```ruby
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# %w( a b c d e ).fourth # => "d"
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# ```
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def fourth = self[3]
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# Equal to `self[4]`.
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#
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# ### Example
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#
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# ```ruby
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# %w( a b c d e ).fifth # => "e"
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# ```
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def fifth = self[4]
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# Converts the array to a comma-separated sentence where the last element is
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# joined by the connector word.
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#
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# ### Examples
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#
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# ```ruby
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# [].to_sentence # => ""
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# ['one'].to_sentence # => "one"
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# ['one', 'two'].to_sentence # => "one and two"
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# ['one', 'two', 'three'].to_sentence # => "one, two and three"
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# ['one', 'two'].to_sentence(two_words_connector: '-')
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# # => "one-two"
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# ```
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#
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# ```
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# ['one', 'two', 'three'].to_sentence(words_connector: ' or ', last_word_connector: ' or at least ')
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# # => "one or two or at least three"
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# ```
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#
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# @see https://github.com/rails/rails/blob/v7.0.4.2/activesupport/lib/active_support/core_ext/array/conversions.rb#L8-L84
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# ActiveSupport Array#to_sentence monkey-patch
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#
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#
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# Copyright (c) David Heinemeier Hansson
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense and/or sell copies of the Software and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#
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#
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# @param [String] words_connector The sign or word used to join all but the last
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# element in arrays with three or more elements (default: `", "`).
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# @param [String] last_word_connector The sign or word used to join the last element
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# in arrays with three or more elements (default: `" and "`).
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# @param [String] two_words_connector The sign or word used to join the elements
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# in arrays with two elements (default: `" and "`).
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sig { params(words_connector: String, two_words_connector: String, last_word_connector: String).returns(String) }
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def to_sentence(words_connector: ", ", two_words_connector: " and ", last_word_connector: " and ")
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case length
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when 0
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+""
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when 1
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# This is not typesafe, if the array contains a BasicObject
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+T.unsafe(self[0]).to_s
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when 2
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"#{self[0]}#{two_words_connector}#{self[1]}"
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else
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"#{T.must(self[0...-1]).join(words_connector)}#{last_word_connector}#{self[-1]}"
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end
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end
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end
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