```
julia> f(x)=x^2
f (generic function with 1 method)
julia> g(x)=x+1
g (generic function with 1 method)
julia> [f,g](3)
ERROR: MethodError: objects of type Vector{Function} are not callable
Use square brackets [] for indexing an Array.
Stacktrace:
[1] top-level scope
@ REPL[13]:1
julia> [f,g].(3)
ERROR: MethodError: objects of type Vector{Function} are not callable
Use square brackets [] for indexing an Array.
Stacktrace:
[1] _broadcast_getindex_evalf
@ .\broadcast.jl:670 [inlined]
[2] _broadcast_getindex
@ .\broadcast.jl:643 [inlined]
[3] getindex
@ .\broadcast.jl:597 [inlined]
[4] copy
@ .\broadcast.jl:875 [inlined]
[5] materialize(bc::Base.Broadcast.Broadcasted{Base.Broadcast.DefaultArrayStyle{0}, Nothing, Vector{Function}, Tuple{Int64}})
@ Base.Broadcast .\broadcast.jl:860
[6] top-level scope
@ REPL[14]:1
julia>
```

I would expect a result as [f(3),g(3)]. How to do that? Thanks.

```
julia> [h(3) for h in [f,g]]
2-element Vector{Int64}:
9
4
```

3 Likes

I myself found an answer:

```
julia> 3 .|> [f,g]
2-element Vector{Int64}:
9
4
julia>
```

6 Likes

```
using Tullio
f(x)=x^2
g(x)=x+1
k=[f,g]
@tullio a[i] := k[i](3)
println(a)
```

1 Like

Another way is to use `invoke`

with broadcasting, like so:

```
julia> f(x)=x^2
f (generic function with 1 method)
julia> g(x)=x+1
g (generic function with 1 method)
julia> v = [f,g]
2-element Vector{Function}:
f (generic function with 1 method)
g (generic function with 1 method)
julia> invoke.(v, Tuple{Int}, 3)
2-element Vector{Int64}:
9
4
```

1 Like