Chapter 4. Handling errors and panics
This chapter covers
- Learning the Go idioms for errors
- Providing meaningful data with errors
- Adding your own error types the Go way
- Working with panics
- Transforming panics into errors
- Working with panics on goroutines
As Robert Burns famously expressed in his poem “To a Mouse,” “The best-laid schemes o’ mice an’ men / Gang aft agley.” Our best plans often still go wrong. No other profession knows this truth as thoroughly as software developers. This chapter focuses on handling those situations when things go awry.
Go distinguishes between errors and panics—two types of bad things that can happen during program execution. An error indicates that a particular task couldn’t be completed successfully. ...
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