Maintenance Ruby 3.4 gets fixes, but no new features. Switch to Ruby 4.0 →
instance method
Integer#odd?
() -> bool
odd? → true or false
numeric.rb
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# File tmp/rubies/ruby-3.4.1/numeric.rb, line 207
def odd?
Primitive.attr! :leaf
Primitive.cexpr! 'rb_int_odd_p(self)'
end
Returns true if self is an odd number, false otherwise.