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Index ¶
Constants ¶
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Variables ¶
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Functions ¶
This section is empty.
Types ¶
type Error ¶
type Error interface {
Error() string
Stacktrace() Error
Trace(offset int, format string, args ...interface{}) Error
Data() interface{}
}
Usage with arbitrary error data:
```go
// Error construction
type MyError struct{}
var err1 error = NewErrorWithData(MyError{}, "my message")
...
// Wrapping
var err2 error = ErrorWrap(err1, "another message")
if (err1 != err2) { panic("should be the same")
...
// Error handling
switch err2.Data().(type){
case MyError: ...
default: ...
}
```
func NewErrorWithData ¶
func NewErrorWithData(data interface{}) Error
New Error with specified data.
type FmtError ¶
type FmtError struct {
// contains filtered or unexported fields
}
FmtError is the data type for NewError() (e.g. NewError().Data().(FmtError)) Theoretically it could be used to switch on the format string.
```go
// Error construction
var err1 error = NewError("invalid username %v", "BOB")
var err2 error = NewError("another kind of error")
...
// Error handling
switch err1.Data().(cmn.FmtError).Format() {
case "invalid username %v": ...
case "another kind of error": ...
default: ...
}
```
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