miniblog.

Has anyone built a great solution to 'run all my unit tests automatically'? It's straightforward to write a while loop in bash, but handling timeouts, syntax errors etc well is hard. Running on save would be good, although I wonder if you could run fast tests on each keystroke.

I frequently find myself running: $ slowish $ slowish | jq $ slowish | jq | grep I feel there must be a better way to build up pipelines incrementally without re-running. I could save each output to a file, but it's more verbose, and most of these tools have nicer output when stdout is a TTY.

What are the most popular languages that have used an AST walker for their implementation? I know Ruby used to do this, but there must be others. (I'm interested in the lowest PL speed that users will tolerate if you have awesome features.)