The following reaction is an example of

$2{ \mathrm{F}}_2+2{\mathrm{OH}}^{-}⟶2{ \mathrm{F}}^{-}+{\mathrm{OF}}_2+{\mathrm{H}}_2\mathrm{O}$

The given reaction is an example of disproportionation reaction.

Since Fluorine undergoes both oxidation and reduction.

$2{\stackrel{0}{\mathrm{F}}}_2+2{\mathrm{OH}}^{-}\to 2{\mathrm{F}}^{-}+\mathrm{O}\stackrel{+1}{{\mathrm{F}}_2 }+{\mathrm{H}}_2\mathrm{O}$