Rust TutorialLesson 5Free preview

Rust Output

This lesson is part of Rust · All levels

Summary

This lesson peels out the technique of displaying text and variable values to the terminal using the Rust output macro. Macros such as print! and println! are used for standard text formats, while {:?} formats are used for complex data debugging. A novice developer will understand how to format a string in a safe and expressive way.

Key points

The 'println!' macro prints text followed by newline
Macro 'print!' prints text without adding new line characters
The placeholder '{}' uses the Display trait for a user-friendly format
The '{:?}' placeholder uses the Debug trait to inspect the data structure during testing

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