let
    Rename = (Source as table) as table =>
        let
            OldColumnNames = Table.ColumnNames(Source),
            NewColumnNames = List.Transform(OldColumnNames, fReplaceFunction),
            ZipColumnNames = List.Zip({OldColumnNames, NewColumnNames}),
            SetDefaultColumnNames = Table.RenameColumns(Source, ZipColumnNames)
        in
            SetDefaultColumnNames
in
    Rename