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[ruby/rubygems] Add documentation for pattern matching methods

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https://github.com/ruby/rubygems/commit/18f64c6b29
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Brandon Weaver 2025-11-10 21:58:41 -08:00 committed by git
parent 3efabc8355
commit 2247b0becb
1 changed files with 25 additions and 0 deletions
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25
lib/rubygems/platform.rb
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@ -146,8 +146,33 @@ class Gem::Platform
to_a.compact.join(@cpu.nil? ? "" : "-")
end
##
# Deconstructs the platform into an array for pattern matching.
# Returns [cpu, os, version].
#
# Gem::Platform.new("x86_64-linux").deconstruct #=> ["x86_64", "linux", nil]
#
# This enables array pattern matching:
#
# case Gem::Platform.new("arm64-darwin-21")
# in ["arm64", "darwin", version]
# # version => "21"
# end
alias_method :deconstruct, :to_a
##
# Deconstructs the platform into a hash for pattern matching.
# Returns a hash with keys +:cpu+, +:os+, and +:version+.
#
# Gem::Platform.new("x86_64-darwin-20").deconstruct_keys(nil)
# #=> { cpu: "x86_64", os: "darwin", version: "20" }
#
# This enables hash pattern matching:
#
# case Gem::Platform.new("x86_64-linux")
# in cpu: "x86_64", os: "linux"
# # Matches Linux on x86_64
# end
def deconstruct_keys(keys)
{ cpu: @cpu, os: @os, version: @version }
end