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End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

Float#-

float - other → float

Returns a new Float which is the difference of float and other.

See also #+ #-@ #** #/ also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1