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Update README.md
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@ -143,8 +143,9 @@ void daily_example()
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#### Backtrace support
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```c++
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// Loggers can store in a ring buffer all messages (including debug/trace) and display later on demand.
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// When needed, call dump_backtrace() to see them
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// Instead of actual logging, debug messages can be stored in a ring buffer for a later use.
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// This is useful in order to display debug logs only when really nededed (e.g. when error happens).
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// When needed, call dump_backtrace() to see them.
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spdlog::enable_backtrace(32); // Store the latest 32 messages in a buffer. Older messages will be dropped.
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// or my_logger->enable_backtrace(32)..
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