End of Life Ruby 3.1 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →
instance method
Psych::Coder#add
add(k, v)
ext/psych/lib/psych/coder.rb
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# File tmp/rubies/ruby-3.1.3/ext/psych/lib/psych/coder.rb, line 78
def []= k, v
@type = :map
@map[k] = v
end
Alias of #[]=