May 2019
Intermediate to advanced
698 pages
17h 21m
English
Content preview from The Complete Rust Programming Reference Guide
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Error handling prelude
"From then on, when anything went wrong with a computer, we said it had bugs in it."
- Grace Hopper
Writing programs that behave well under expected conditions is a good start. It's when a program encounters unexpected situations where it gets really challenging. Proper error handling is an important but often overlooked practice in software development. Most error handling, in general, falls into three categories:
- Recoverable errors that are expected to happen due to the user and the environment interacting with the program, for example, a file not found error or a number parse error.
- Non-recoverable errors that violate the contracts or invariants of the program, for example, index out of bounds or divide by zero ...
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