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End of Life Ruby 3.2 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

OptionParser#reject

reject(*args, &blk)

Directs to reject specified class argument.

t

Argument class specifier, any object including Class.

Example
reject(t)
See also .reject #program_name #release #permute! also in 4.1 · 4.0 · 3.4 · 3.3 · 3.1 · 3.0