stl.startup (arity 1)

startup Macro - Should be the first piece of code in your program.
Inits the IO variable, and jumps to the given code start.

Signature

def startup code_start > IO { ... }

Defined in runlib.fj — lines 22–26 (view on GitHub).

Complexity

  • Time: 2

  • Space: 2

See the complexity glossary for what @, w, dw, dbit, n mean.

Output labels

This macro exposes labels into the caller’s scope via >:

  • IO — the address of the opcode that’s reserved for Input/Output. More info in https://esolangs.org/wiki/FlipJump#Input_/_Output

Source

Click to view the macro body

def startup code_start > IO {
    ;code_start    // 0w;1w : first code to run
  IO:
    ;0             // 2w;3w : sets the io_handler to address 0 (good for a future wflip)
}

Used by

Example uses

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