IO adapters (io::sync, io::file)
Non-blocking streams are the compiler virtual module
io.
This package adds blocking loops and whole-file helpers on top.
use io::{stdout, open};
use io::sync::{write_all, read_to_end};
use io::file::{read_text, write_text};Structure concurrent IO with task::scope / spawn (IO inside a task parks it).
For a one-off generator, task::block_on resumes it to completion.
Tutorials: IO streams, Tasks.
io::sync#
Blocking helpers over L0 + wait_readable / wait_writable (src/io/sync.hy), not host natives.
| Function | Notes |
|---|---|
write_all / read_exact / read_to_end | Park on WouldBlock; write_all uses io::write_from |
accept_wait | accept + wait_readable |
recv_from_wait | recv_from + wait_readable |
print / println / eprintln | UTF-8 stdout/stderr helpers |
read_line | Until LF (strips CR); None on EOF with no bytes |
use io::{stdout};
use io::sync::{write_all};
use string::{format, to_bytes};
fn main() {
write_all(stdout(), to_bytes(format("%i", 42)));
}io::file#
| Function | Notes |
|---|---|
read_bytes / write_bytes | Whole file as Vec<byte> |
read_text / write_text | UTF-8 via virtual string::{from_bytes, to_bytes} |