Log

C++

• cppreference.com
  • Input/output library
    • std::cerr, std::wcerr
      • writes to the standard C error stream stderr, unbuffered
    • std::clog, std::wclog
      • writes to the standard C error stream stderr

Python

• Python.org
  • Python documentation
    • The Python Standard Library
      • logging — Logging facility for Python
        • Logging Levels
          • logging.NOTSET
          • logging.DEBUG
          • logging.INFO
          • logging.WARNING
          • logging.ERROR
          • logging.CRITICAL

Apple

• Apple
  • Apple Developer
    • Apple Developer Documentation
      • os
        • Logging
          • Logger
            • Logging a Scoped Message
              • func notice(OSLogMessage)
              • func debug(OSLogMessage)
              • func trace(OSLogMessage)
              • func info(OSLogMessage)
              • func error(OSLogMessage)
              • func warning(OSLogMessage)
              • func fault(OSLogMessage)
              • func critical(OSLogMessage)

misc.

CocoaLumberjack

/**
 * Ready to use log macros with no context or tag.
 **/
#define DDLogError(frmt, ...)   LOG_MAYBE(NO,                LOG_LEVEL_DEF, DDLogFlagError,   0, nil, __PRETTY_FUNCTION__, frmt, ##__VA_ARGS__)
#define DDLogWarn(frmt, ...)    LOG_MAYBE(LOG_ASYNC_ENABLED, LOG_LEVEL_DEF, DDLogFlagWarning, 0, nil, __PRETTY_FUNCTION__, frmt, ##__VA_ARGS__)
#define DDLogInfo(frmt, ...)    LOG_MAYBE(LOG_ASYNC_ENABLED, LOG_LEVEL_DEF, DDLogFlagInfo,    0, nil, __PRETTY_FUNCTION__, frmt, ##__VA_ARGS__)
#define DDLogDebug(frmt, ...)   LOG_MAYBE(LOG_ASYNC_ENABLED, LOG_LEVEL_DEF, DDLogFlagDebug,   0, nil, __PRETTY_FUNCTION__, frmt, ##__VA_ARGS__)
#define DDLogVerbose(frmt, ...) LOG_MAYBE(LOG_ASYNC_ENABLED, LOG_LEVEL_DEF, DDLogFlagVerbose, 0, nil, __PRETTY_FUNCTION__, frmt, ##__VA_ARGS__)

NSLogger

// Log level usual usage:
// Level 0: errors only!
// Level 1: important informations, app states…
// Level 2: less important logs, network requests…
// Level 3: network responses, datas and images…
// Level 4: really not important stuff.



#ifdef DEBUG
    #define NSLog(...)                      LogMessageF(__FILE__, __LINE__, __FUNCTION__, @"NSLog", 0, __VA_ARGS__)
    #define LoggerError(level, ...)         LogMessageF(__FILE__, __LINE__, __FUNCTION__, @"Error", level, __VA_ARGS__)
    #define LoggerApp(level, ...)           LogMessageF(__FILE__, __LINE__, __FUNCTION__, @"App", level, __VA_ARGS__)
    #define LoggerView(level, ...)          LogMessageF(__FILE__, __LINE__, __FUNCTION__, @"View", level, __VA_ARGS__)
    #define LoggerService(level, ...)       LogMessageF(__FILE__, __LINE__, __FUNCTION__, @"Service", level, __VA_ARGS__)
    #define LoggerModel(level, ...)         LogMessageF(__FILE__, __LINE__, __FUNCTION__, @"Model", level, __VA_ARGS__)
    #define LoggerData(level, ...)          LogMessageF(__FILE__, __LINE__, __FUNCTION__, @"Data", level, __VA_ARGS__)
    #define LoggerNetwork(level, ...)       LogMessageF(__FILE__, __LINE__, __FUNCTION__, @"Network", level, __VA_ARGS__)
    #define LoggerLocation(level, ...)      LogMessageF(__FILE__, __LINE__, __FUNCTION__, @"Location", level, __VA_ARGS__)
    #define LoggerPush(level, ...)          LogMessageF(__FILE__, __LINE__, __FUNCTION__, @"Push", level, __VA_ARGS__)
    #define LoggerFile(level, ...)          LogMessageF(__FILE__, __LINE__, __FUNCTION__, @"File", level, __VA_ARGS__)
    #define LoggerSharing(level, ...)       LogMessageF(__FILE__, __LINE__, __FUNCTION__, @"Sharing", level, __VA_ARGS__)
    #define LoggerAd(level, ...)            LogMessageF(__FILE__, __LINE__, __FUNCTION__, @"Ad and Stat", level, __VA_ARGS__)