std.log

Structured logging with level filtering.

import std.log

Log Levels

enum Level {
    Debug
    Info
    Warn
    Error
}

Output goes to stderr with timestamps in millisecond precision.

Functions

debug

log.debug(message: string)

Logs at DEBUG level.

info

log.info(message: string)

Logs at INFO level.

warn

log.warn(message: string)

Logs at WARN level.

log_error

log.log_error(message: string)

Logs at ERROR level. Named log_error to avoid conflict with the error keyword.

set_level

log.set_level(level: log.Level)

Sets the minimum log level. Messages below this level are silently dropped.

get_level

log.get_level() log.Level

Returns the current minimum log level.

Example

import std.log

fn main() {
    log.set_level(log.Level.Info)
    log.debug("this is suppressed")
    log.info("application started")
    log.warn("disk space low")
    log.log_error("connection failed")
}