We note that some classical functional estimation problems may be redu
ced to a general unique framework and study an estimator within this g
eneral framework that reduces to the classical histogram type estimato
rs in various examples presented. The convergence in probability and t
he almost complete convergence of this general estimator are studied o
btaining convergence conditions which reduce to the classical conditio
ns in each case. Finally, this general framework provides conditions f
or the convergence of the finite dimensional distributions of the asso
ciated empirical process.