Updated example

example/example.cpp

@@ -10,8 +10,6 @@ void stdout_logger_example();
 void basic_example();
 void rotating_example();
 void daily_example();
-void env_cfg_example();
-void argv_cfg_example(int, char*[]);
 void async_example();
 void binary_example();
 void trace_example();
@@ -21,10 +19,21 @@ void err_handler_example();
 void syslog_example();
 
 #include "spdlog/spdlog.h"
+#include "spdlog/cfg/env.h" // for loading levels from the environment variables
 
-int main(int args, char *argv[])
+int main(int, char *[])
 {
     spdlog::info("Welcome to spdlog version {}.{}.{}  !", SPDLOG_VER_MAJOR, SPDLOG_VER_MINOR, SPDLOG_VER_PATCH);
+
+    // Optionally load log levels from the SPDLOG_LEVEL env variable or from argv.
+    // For example: set the global level to info and mylogger to to trace:
+    // SPDLOG_LEVEL=info,mylogger=trace && ./example
+    spdlog::cfg::load_env();
+
+    // or from command line: "./example SPDLOG_LEVEL=info,mylogger=trace"
+    // #include "spdlog/cfg/argv.h" // for loading levels from argv
+    // spdlog::cfg::load_argv(args, argv);
+
     spdlog::warn("Easy padding in numbers like {:08d}", 12);
     spdlog::critical("Support for int: {0:d};  hex: {0:x};  oct: {0:o}; bin: {0:b}", 42);
     spdlog::info("Support for floats {:03.2f}", 1.23456);
@@ -67,12 +76,6 @@ int main(int args, char *argv[])
         err_handler_example();
         trace_example();
 
-        // Init levels from SPDLOG_LEVEL env variable
-        env_cfg_example();
-
-        // Init levels from args (example.exe "SPDLOG_LEVEL=trace,l2=info,l3=off")
-        argv_cfg_example(args, argv);
-
         // Flush all *registered* loggers using a worker thread every 3 seconds.
         // note: registered loggers *must* be thread safe for this to work correctly!
         spdlog::flush_every(std::chrono::seconds(3));
@@ -80,7 +83,6 @@ int main(int args, char *argv[])
         // Apply some function on all registered loggers
         spdlog::apply_all([&](std::shared_ptr<spdlog::logger> l) { l->info("End of example."); });
 
-
         // Release all spdlog resources, and drop all loggers in the registry.
         // This is optional (only mandatory if using windows + async log).
         spdlog::shutdown();
@@ -125,19 +127,6 @@ void daily_example()
     auto daily_logger = spdlog::daily_logger_mt("daily_logger", "logs/daily.txt", 2, 30);
 }
 
-#include "spdlog/cfg/env.h"
-void env_cfg_example()
-{
-    // set levels from SPDLOG_LEVEL env variable
-    spdlog::cfg::load_env();
-}
-
-#include "spdlog/cfg/argv.h"
-void argv_cfg_example(int args, char *argv[])
-{
-    spdlog::cfg::load_argv(args, argv);
-}
-
 #include "spdlog/async.h"
 void async_example()
 {