Is there an easy way to bake in parameters at compile time?

[Araq]

I hope this gets the point accross.
    
    
    type
      Mat = object
        a: array[10, array[20, int]]
    
    proc apply(m: var Mat; op: proc (x: var int)) =
      # callback style
      for i in 0..<10:
        for j in 0..<20:
          op(m.a[i][j])
    
    var m: Mat
    
    apply m, (proc (x: var int) = inc x, 2)
    
    
    template applyT(m: var Mat; op: untyped) =
      # template style
      for i in 0..<10:
        for j in 0..<20:
          op(m.a[i][j])
    
    template opInc(x) = inc x, 2
    
    applyT m, opInc
    
    
    Run