{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to record logs in a blockchain, avoiding the use of Rust's println! macro?","a":"In blockchain, log recording is a crucial  step that ensures system transparency and traceability. To avoid using Rust's println! macro, we can adopt the following methods to record logs:\\n\\n1. Using logging libraries: Rust has many mature logging libraries such as log4rs, loguru, or serde_log. These libraries enable us to log more flexibly and efficiently. For example, we can configure log output using loggers, filters, and processors in the log4rs library.\\n\\n2. Adopting structured logs: Structured logs allow us to encode log messages as key-value pairs,"}]}],"pr":"da26395e52c2269b6dff15b796cc9759dd8a5eab7d89f7070dbfeb2bb80db359"}