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dave.cheney.net | ||
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grosser.it
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| | | | | Why go does not have nice backtraces Collecting stacktraces is expensive, so the core language will never implement them for everything.If you need your code to be highly performant then consider making a error wrapper that can be turned on/off based on a environment variable. Simple fix import github.com/pkg/errors and use it instead of errors... | |
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andreabergia.com
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| | | | | Error handling is a fundamental aspect of programming. Unless you are writing hello world, you will need to handle errors in your code. In this post, I will discuss a bit the most common approaches used by various programming languages. Return error codes This is one of the most ancient strategies - if a function can fail, it can simply return an error code - often a negative number, or null. | |
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www.4async.com
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| | | | | ???????golang/x/exp???????????xerrors???????????golang/x/exp???????errors??????????????????\nPackage errors implements functions to manipulate errors. This package implements the Go 2 draft designs for error inspection and printing ?????????????????????????????????????????github.com/pkg/errors?????????????\n????error? ???????????github.com/pkg/errors??????????Go????????????????????????????\npackage main import ( "fmt" "golang.org/x/exp/xerrors" ) func raiseError() error { return xerrors.New("a new error") } func main() { err := xerrors.Errorf("raiseError: %w", raiseError()) fmt.Println(err) } ?????\nraiseError: a new error ??????????github.com/pkg/errors?????????xerrors.Errorf??????errors.Wrap???? ????????%w??????????????????????????\n???????????????????????????????????Is?????????As??????????Opaque?????????Unwrap?????????????????????\nvar ( ErrBase = xerrors.New("a new error") ) func main() { err := xerrors.Errorf("raiseError: %w", ErrBase) fmt.Println(ErrBase == ErrBase) // ???? fmt.Println(err == ErrBase) // ??ErrBase?????? fmt.Println(xerrors.Is(err, ErrBase)) // ???????ErrBase fmt.Println(xerrors.Opaque(err) == err) // ????????????? fmt.Println(xerrors.Is(xerrors.Opaque(err), ErrBase)) // ????????????? fmt.Println(xerrors.Unwrap(err) == ErrBase) // ??????????????? } ??????\n | |
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www.shuttle.rs
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| | | What makes Rust worth using for backend web services? | ||
