Why use a logger library and not just std::cout ?

1. easyloggingpp

   1 2 3,881 5.4 C++

   Discontinued C++ logging library. It is powerful, supports asynchronous low latency, extendable, light-weight, fast performing, thread and type safe and consists of many built-in features. It provides ability to write logs in your own customized format. It also provide support for logging your classes, third-party libraries, STL and third-party containers etc.

   

   I am currently looking at a well written code base. I notice the author uses https://github.com/abumq/easyloggingpp to log messages. Why might they have done that rather than just use std::cout or std::ofstream? The software doesn't really have performance constraints (most of the time it's just sleeping) nor is it networked. What do logging libraries offer and when would I decide to use one?

2. Stream

   getstream.io featured

   Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.

   

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