Comment by lispitillo

Perhaps instead of coding many small one day projects one could program one day projects that compose with each other. For example, I was thinking about developing a library that implements a version of J in Common Lisp (but I think fuel is lacking) so that, for example, the one day project named random-sample could be just:

  randomSample =: 4 :'(x ? #y){y' NB. can't repeat.

  randomSample =: 4 :'(? x # #y){y' can repeat.

 So that, in many cases,  one day projects could be reduced to one or two lines definitions (for those that know J that is the caveat).