Rust errors: Difference between revisions
From wikinotes
(Created page with "Rust has two primary methods of handling errors. * <code>panic!()</code> halts/exits the program * <code>Result</code> types are for handle-able errors = panic = <blockquote> <syntaxhighlight lang="rust"> </syntaxhighlight> </blockquote><!-- panic --> = Result = <blockquote> <syntaxhighlight lang="rust"> </syntaxhighlight> </blockquote><!-- Result -->") |
(→panic) |
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| Line 5: | Line 5: | ||
= panic = | = panic = | ||
<blockquote> | <blockquote> | ||
* intended for halting application, not control flow | |||
* have backtraces | |||
<syntaxhighlight lang="rust"> | <syntaxhighlight lang="rust"> | ||
panic!("tried to X but couldn't Y") | |||
// convert panic to result | |||
// (not intended for native rust code) | |||
let result = panic::catch_unwind(|| { | |||
panic!("oh no!"); | |||
}); | |||
</syntaxhighlight> | </syntaxhighlight> | ||
</blockquote><!-- panic --> | </blockquote><!-- panic --> | ||
Revision as of 17:18, 8 February 2023
Rust has two primary methods of handling errors.
panic!()halts/exits the programResulttypes are for handle-able errors
panic
- intended for halting application, not control flow
- have backtraces
panic!("tried to X but couldn't Y") // convert panic to result // (not intended for native rust code) let result = panic::catch_unwind(|| { panic!("oh no!"); });
