stderr (slug.io)

slug.io.stderr

slug.io.stderr — write to standard error

Provides print and println equivalents that write to stderr instead of stdout. Useful for diagnostic output, error messages, and logging that should not mix with a program’s regular output.

Important: import style

print and println are builtins that take precedence over imported names, so val {*} = import('slug.io.stderr') will not shadow them. Always import this module under a name:

val err = import('slug.io.stderr')

err.print("warning: ")
err.println("retrying after timeout")

@effects(‘io’)

TOC

• print(args)
• println(args)

Functions

print(args)

fn slug.io.stderr#print(...args) -> ?

writes args to stderr without a trailing newline.

Behaves identically to the builtin print but writes to stderr.

println(args)

fn slug.io.stderr#println(...args) -> ?

writes args to stderr followed by a newline.

Behaves identically to the builtin println but writes to stderr.