Tools

fb run

Compiles a program and runs it.

fb run [options] [file.fb | package folder] [-- <arguments>]

fb run builds a program as fb build does, and runs it. With no file or folder, it works on the package the current folder is in: the nearest folder, from the current one up, with a project.toml. What follows -- goes to the program as its command line. fb exits with the program’s exit code; a program that panics exits with 101, and fb says so.

Options

Option
`--release`	Optimizes, and lets integer overflow wrap instead of panicking
`--show <stages>`	Prints what the compiler made at each stage: `tokens`, `ast`, `types`, `mir`, `llvm`, or `all`
`--offline`	Uses only the registry packages in the cache
`--color <when>`	Colors the output: `auto`, `always`, or `never`

Examples

fb run
fb run --release
fb run -- --top 3 notes.txt
fb run scripts/rename.fb -- photos/

A panic prints where it happened, and the calls that led there:

panic: index 5 is out of range for 3 elements at main.fb:12:17
    at Pick (main.fb:12)
    at top-level code (main.fb:20)
error: report exited with code 101, which a panic gives

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