Debug. In Rust Debug is a trait and it can be automatically implemented by using the derive syntax. This is done on a struct and it enables debugging output showing the struct contents.
Typically, it is best to just have the Rust compiler automatically implement Debug. This can speed up development time of Rust programs.
Example code. Consider this example program—the Test struct is decorated with the derive Debug syntax. It is important to start the line with the "#" symbol.
Step 1 We create a new Test struct by specifying the code field and the values field (which is a more complex Vector type).
Summary. Using the Debug trait enables us to output the contents of structs with println. It does not seem to make programs slower unless we add debugging calls.
Dot Net Perls is a collection of pages with code examples, which are updated to stay current. Programming is an art, and it can be learned from examples.
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