made FHNParams constructor more readable

src/constants.jl

@@ -8,6 +8,11 @@ struct FHNParams
     ϵ::Float64
     a::Float64
     b::Float64
+
+    # Inner constructor that takes keyword arguments
+    # The semicolon ';' separates positional arguments from keyword arguments
+    FHNParams(; N::Int, dx::Float64, Du::Float64, Dv::Float64, ϵ::Float64, a::Float64, b::Float64) =
+        new(N, dx, Du, Dv, ϵ, a, b)
 end
 
 export FHNParams

src/solver.jl

@@ -44,7 +44,7 @@ end
 """
 function run_simulation(tspan::Tuple{Float64,Float64}, N::Int)
     # Turing-spot parameters
-    p = FHNParams(N, 1.0, 1e-5, 1e-3, 0.01, 0.1, 0.5)
+    p = FHNParams(N = N, dx = 1.0, Du = 1e-5, Dv = 1e-3, ϵ = 0.01, a = 0.1, b = 0.5)
 
     # Initial conditions (random noise)
     Random.seed!(1234)