Save/load REPL state

General Usage
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A major difference is that R retains their functions in source code form, while Julia does not. While you might be able to recursively serialize the data structures in the current workspace, serializing JIT compiled functions does not make sense. JIT compiled code contains optimizations relevant only to JIT such as runtime pointer references which would be invalid when deserialized.

To get serializable native code, you help to get Julia into an mode where it is caching native code to disk. See julia --help-hidden for options.

 --compile={yes*|no|all|min}
                          Enable or disable JIT compiler, or request exhaustive or minimal compilation

 --output-o <name>        Generate an object file (including system image data)
 --output-ji <name>       Generate a system image data file (.ji)
 --strip-metadata         Remove docstrings and source location info from system image
 --strip-ir               Remove IR (intermediate representation) of compiled functions

 --output-unopt-bc <name> Generate unoptimized LLVM bitcode (.bc)
 --output-bc <name>       Generate LLVM bitcode (.bc)
 --output-asm <name>      Generate an assembly file (.s)
 --output-incremental={yes|no*}
                          Generate an incremental output file (rather than complete)
 --trace-compile={stderr,name}
                          Print precompile statements for methods compiled during execution or save to a path
 --image-codegen          Force generate code in imaging mode
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