Re: [Haskell-cafe] Reader monad, implicit parameters, or something else altogether?

Just an idiot-level question: so these "constants" are subject to revision, but *how often*? What is the actual cost of recompiling and using them *as* constants, compared with the cost of rereading the stuff every time you run the program and passing it around? -- If stupidity were a crime, who'd 'scape hanging?