What is Julia's equivalent of R's %in%

julia> x=["a","b","c"]
julia> df = DataFrame(X = ["a","c","d","g"])

julia> df[.!in(x).(df.X),:]

2×1 DataFrame
│ Row │ X      │
│     │ String │
├─────┼────────┤
│ 1   │ d      │
│ 2   │ g      │


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