SnoopCompile observes the Julia compiler, causing it to record the
functions and argument types it's compiling. From these lists of methods,
you can generate lists of precompile directives that may reduce the latency between
loading packages and using them to do "real work."
See the documentation:
Quite a few packages have used SnoopCompile to reduce startup latency, and some have preserved their scripts which may serve as an example to other users:
- MatLang (SnoopFile Folder and source file).