# F

- [fill](/scala/function-operation/f/fill.md)
- [filter](/scala/function-operation/f/filter.md)
- [filterKeys](/scala/function-operation/f/filterkeys.md)
- [filterNot](/scala/function-operation/f/filternot.md)
- [find](/scala/function-operation/f/find.md)
- [findLast](/scala/function-operation/f/findlast.md)
- [flatMap](/scala/function-operation/f/flatmap.md)
- [flatten](/scala/function-operation/f/flatten.md)
- [fold](/scala/function-operation/f/fold.md)
- [foldLeft](/scala/function-operation/f/foldleft.md)
- [foldRight](/scala/function-operation/f/foldright.md)
- [forall](/scala/function-operation/f/forall.md)
- [foreach](/scala/function-operation/f/foreach.md)
- [fromFunction](/scala/function-operation/f/fromfunction.md)