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instance method
Psych::Coder#add
add(k, v)
ext/psych/lib/psych/coder.rb
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# File tmp/rubies/ruby-4.1.0-preview1/ext/psych/lib/psych/coder.rb, line 78
def []= k, v
@type = :map
@map[k] = v
end
Alias of #[]=