| appender_console | Append log record to stdout |
| appender_file | Append log messages to a file |
| appender_pushbullet | Send log messages to Pushbullet |
| appender_slack | Send log messages to a Slack channel |
| appender_tee | Append log messages to a file and stdout as well |
| colorize_by_log_level | Colorize string by the related log level |
| DEBUG | Log levels |
| ERROR | Log levels |
| FATAL | Log levels |
| formatter_glue | Apply 'glue' to convert R objects into a character vector |
| formatter_glue_or_sprintf | Apply 'glue' and 'sprintf' |
| formatter_logging | Mimic the default formatter used in the 'logging' package |
| formatter_paste | Concatenate R objects into a character vector via 'paste' |
| formatter_sprintf | Apply 'sprintf' to convert R objects into a character vector |
| get_logger_meta_variables | Collect useful information about the logging environment to be used in log messages |
| grayscale_by_log_level | Render a string with light/dark gray based on the related log level |
| INFO | Log levels |
| layout_glue | Format a log message with 'glue' |
| layout_glue_colors | Format a log message with 'glue' and ANSI escape codes to add colors |
| layout_glue_generator | Generate log layout function using common variables available via glue syntax |
| layout_json | Generate log layout function rendering JSON |
| layout_logging | Format a log record as the logging package does by default |
| layout_simple | Format a log record by concatenating the log level, timestamp and message |
| logger | Generate logging utility |
| log_appender | Get or set log record appender function |
| log_debug | Log a message with given log level |
| log_error | Log a message with given log level |
| log_eval | Evaluate an expression and log results |
| log_fatal | Log a message with given log level |
| log_formatter | Get or set log message formatter |
| log_info | Log a message with given log level |
| log_layout | Get or set log record layout |
| log_level | Log a message with given log level |
| log_levels | Log levels |
| log_success | Log a message with given log level |
| log_threshold | Get or set log level threshold |
| log_trace | Log a message with given log level |
| log_warn | Log a message with given log level |
| skip_formatter | Adds the skip_formatter attribute to an object so that logger will skip calling the formatter function on the object(s) to be logged |
| SUCCESS | Log levels |
| TRACE | Log levels |
| WARN | Log levels |
| with_log_threshold | Evaluate R expression with a temporarily updated log level threshold |