Logger

Overview

The Logger struct in std::logger provides structured logging with multiple severity levels. Backed by a C runtime logger implementation.

import std::logger;

Log Levels

Level

Enum Value

Description

TRACE0Fine-grained diagnostic information

DEBUG1Debugging information

INFO2Informational messages

WARN3Potentially harmful situations

ERROR4Error events

FATAL5Critical errors that may cause termination

Output Targets

enum LoggerOutput {
    STDOUT,
    STDERR
}

Constructor

Logger log = Logger("my-service");

Creates a logger with the given name, defaulting to stdout and TRACE level.

Methods

Method

Description

trace(str message)Log at TRACE level

debug(str message)Log at DEBUG level

info(str message)Log at INFO level

warn(str message)Log at WARN level

error(str message)Log at ERROR level

fatal(str message)Log at FATAL level

setLevel(i32 level)Change the minimum log level

destroy()Frees the logger resources

Example

import std::logger;

void main() {
    Logger log = Logger("app");

    log.info("Application started");
    log.debug("Loading configuration...");
    log.warn("Config file not found, using defaults");
    log.error("Failed to connect to database");

    log.destroy();
}