io Module

Standard input/output and file utilities.

Functions

read_file(path str) -> str | error: Reads entire file content.
write_file(path str, content str) -> error | null: Overwrites file with content.
append_file(path str, content str) -> error | null: Appends content to file.
delete_file(path str) -> error | null: Deletes a file.
read_lines(path str) -> [str] | error: Reads file into a list of lines.
write_lines(path str, lines [str]) -> error | null: Writes lines to a file, joined by \n.
read_bytes(path str) -> [int] | error: Reads file bytes as integers 0..255.
write_bytes(path str, data [int]) -> error | null: Writes bytes from integers 0..255.
copy_file(src str, dst str) -> error | null: Copies a file.
exists(path str) -> bool: Returns true if the path exists.
stdin() -> str: Reads a line from stdin.
stdout(data str): Writes to stdout with newline.
stderr(data str): Writes to stderr with newline.

load io
if io.exists("data.txt"):
    out(io.read_file("data.txt")?)