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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Test-integerness/Ruby/test-integerness.rb Normal file
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class Numeric
def to_i?
self == self.to_i rescue false
end
end
# Demo
ar = [25.000000, 24.999999, 25.000100, -2.1e120, -5e-2, # Floats
Float::NAN, Float::INFINITY, # more Floats
2r, 2.5r, # Rationals
2+0i, 2+0.0i, 5-5i] # Complexes
ar.each{|num| puts "#{num} integer? #{num.to_i?}" }