October 2019
Intermediate to advanced
444 pages
10h 37m
English
Content preview from Rust Programming Cookbook
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How it works...
In this more complex example, we are using Rust's logging infrastructure, which consists of two main parts:
- The log crate (https://github.com/rust-lang-nursery/log), which provides the facade (interface) to the logging macros
- A logging implementor such as log4rs (https://github.com/sfackler/log4rs), env_logger (https://github.com/sebasmagri/env_logger/), or similar (https://docs.rs/log/0.4.8/log/#available-logging-implementations)
After the initial setup in steps 1 and 2, we simply have to import the macros provided by the log crate in step 3—nothing more. As we create a function to write to all available log levels (think of the levels as tags to filter by) and an additional target in this line in step 4 (as shown in the ...
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