julia> StaticArrays.construct_type(SMatrix{2},(1,2,3,4))
SMatrix{2, 2, Int64} (alias for SArray{Tuple{2, 2}, Int64, 2})

julia> StaticArrays.construct_type(SMatrix{2},(1.,2,3,4))
SMatrix{2, 2, Float64} (alias for SArray{Tuple{2, 2}, Float64, 2})

julia> StaticArrays.construct_type(SMatrix,(1.,2,3,4)) # the output's size is not static.
ERROR: DimensionMismatch: No precise constructor for SMatrix found. Length of input was 4.

julia> struct Point2D{T} <: FieldVector{2,T}
           x::T
           y::T
       end

julia> Point2D(1,1.0)
2-element Point2D{Float64} with indices SOneTo(2):
 1.0
 1.0

julia> Scalar(1, 2)
ERROR: DimensionMismatch: No precise constructor for Scalar found. Length of input was 2.
julia> Scalar((1, 2))
Scalar{Tuple{Int64, Int64}}(((1, 2),))
julia> SVector{1}(1, 2)
ERROR: DimensionMismatch: No precise constructor for SVector{1} found. Length of input was 2.
julia> SVector{1}((1, 2))
1-element SVector{1, Tuple{Int64, Int64}} with indices SOneTo(1):
 (1, 2)