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If you run `~` before any command, sbt watches the directory for any source changes, and on detecting source changes, redoes the command. So `sbt ~compile` will
by joshlemer 10y ago
If you run `~` before any command, sbt watches the directory for any source changes, and on detecting source changes, redoes the command. So `sbt ~compile` will re-compile any new sources as soon as they are saved.
- jpliska 10y agoThe use of the ~ here illustrates the problem in the scala world: a lot of surprising bells and whistles. Why not call it watch instead of ~?
- justinhj 10y agoOr just use IntelliJ and you can reload classes while your program is running if you want. Sbt is a very powerful tool but it's not written with readability for new users in mind.
- Sphax 10y agoWait, how does that help build time exactly ? It may help with the perceived build time, but your CI builds are still taking the same (long) time.
- floatboth 10y agoCI, sure, but on dev machines this means you're not throwing away the JVM and restarting it, reloading all the classes etc. on every build