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Update README.md

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This commit is contained in:
Gabi Melman
2019-01-09 15:56:05 +02:00
committed by GitHub
parent f18a55831c
commit 0b8a84f536
1 changed files with 30 additions and 29 deletions
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README.md
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@@ -77,6 +77,34 @@ async... Elapsed: 0.349851 2,858,358/sec
## Usage samples ## Usage samples
#### Basic usage
```c++
#include "spdlog/spdlog.h"
int main()
{
spdlog::info("Welcome to spdlog!");
spdlog::error("Some error message with arg: {}", 1);
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);
spdlog::info("Positional args are {1} {0}..", "too", "supported");
spdlog::info("{:<30}", "left aligned");
spdlog::set_level(spdlog::level::debug/ Set global log level to debug
spdlog::debug("This message should be displayed..");
// change log pattern
spdlog::set_pattern("[%H:%M:%S %z] [%n] [%^---%L---%$] [thread %t] %v");
// Compile time log levels
// define SPDLOG_ACTIVE_LEVEL to desired level
SPDLOG_TRACE("Some trace message with param {}", {});
SPDLOG_DEBUG("Some debug message");
}
```
#### create stdout/stderr logger object
```c++ ```c++
#include "spdlog/spdlog.h" #include "spdlog/spdlog.h"
#include "spdlog/sinks/stdout_color_sinks.h" #include "spdlog/sinks/stdout_color_sinks.h"
@@ -84,35 +112,8 @@ void stdout_example()
{ {
// create color multi threaded logger // create color multi threaded logger
auto console = spdlog::stdout_color_mt("console"); auto console = spdlog::stdout_color_mt("console");
console->info("Welcome to spdlog!");
console->error("Some error message with arg: {}", 1);
auto err_logger = spdlog::stderr_color_mt("stderr"); auto err_logger = spdlog::stderr_color_mt("stderr");
err_logger->error("Some error message");
// Formatting examples
console->warn("Easy padding in numbers like {:08d}", 12);
console->critical("Support for int: {0:d}; hex: {0:x}; oct: {0:o}; bin: {0:b}", 42);
console->info("Support for floats {:03.2f}", 1.23456);
console->info("Positional args are {1} {0}..", "too", "supported");
console->info("{:<30}", "left aligned");
spdlog::get("console")->info("loggers can be retrieved from a global registry using the spdlog::get(logger_name)"); spdlog::get("console")->info("loggers can be retrieved from a global registry using the spdlog::get(logger_name)");
// Runtime log levels
spdlog::set_level(spdlog::level::info); // Set global log level to info
console->debug("This message should not be displayed!");
console->set_level(spdlog::level::trace); // Set specific logger's log level
console->debug("This message should be displayed..");
// Customize msg format for all loggers
spdlog::set_pattern("[%H:%M:%S %z] [%n] [%^---%L---%$] [thread %t] %v");
console->info("This an info message with custom format");
// Compile time log levels
// define SPDLOG_DEBUG_ON or SPDLOG_TRACE_ON
SPDLOG_TRACE(console, "Enabled only #ifdef SPDLOG_TRACE_ON..{} ,{}", 1, 3.23);
SPDLOG_DEBUG(console, "Enabled only #ifdef SPDLOG_DEBUG_ON.. {} ,{}", 1, 3.23);
} }
``` ```
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