derivative now throws for Function first input with non-Num second input

JuliaSymbolics · Sep 3, 2024 · 4d74c67 · 4d74c67
1 parent b7d75d0
commit 4d74c67
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/diff.jl b/src/diff.jl
@@ -372,6 +372,7 @@ derivative(::typeof(*), args::NTuple{N,Any}, ::Val{i}) where {N,i} = *(deleteat!
 derivative(::typeof(one), args::Tuple{<:Any}, ::Val) = 0
 
 derivative(f::Function, x::Num) = derivative(f(x), x)
+derivative(::Function, x::Any) = TypeError(:derivative, "2nd argument", Num, typeof(x)) |> throw
 
 function count_order(x)
     @assert !(x isa Symbol) "The variable $x must have an order of differentiation that is greater or equal to 1!"