fix ambiguity problem in filter/!

Author: sl-solution

src/dataset/other.jl

@@ -1038,7 +1038,7 @@ julia> filter(ds, 2:3, type = isless, with = :x)
    3 │        5       2.0      true
 ```
 """
-function Base.filter(ds::AbstractDataset, cols::Union{ColumnIndex, MultiColumnIndex}; view = false, type= all, kwargs...)
+function Base.filter(ds::AbstractDataset, cols::Union{Vector{T}, ColumnIndex, MultiColumnIndex}; view = false, type= all, kwargs...) where T <: Union{<:Integer, Symbol, AbstractString}
     if view
         Base.view(ds, byrow(ds, type, cols; kwargs...), :)
     else
@@ -1058,7 +1058,7 @@ Refer to [`filter`](@ref) for exmaples.
 
 See [`byrow`](@ref), [`filter`](@ref), [`delete!`](@ref), [`delete`](@ref)
 """
-Base.filter!(ds::Dataset, cols::Union{ColumnIndex, MultiColumnIndex}; type = all, kwargs...) = deleteat!(ds, .!byrow(ds, type, cols; kwargs...))
+Base.filter!(ds::Dataset, cols::Union{Vector{T}, ColumnIndex, MultiColumnIndex}; type = all, kwargs...) = deleteat!(ds, .!byrow(ds, type, cols; kwargs...)) where T <: Union{<:Integer, Symbol, AbstractString}
 
 # filter out `true`s
 """