# Functions
As finds the first error in err's chain that matches target, and if so, sets target to that error value and returns true.
CallDetail print a function call shortly.
Detail is provided for backward compatibility
Deprecated: Use err.Error() instead.
Err returns the cause error.
Info is provided for backward compatibility
Deprecated: Use NewWith instead.
InfoEx is provided for backward compatibility
Deprecated: Use NewWith instead.
Is reports whether any error in err's chain matches target.
IsNotFound unwraps err and checks it is a *NotFound object or not.
New returns an error that formats as the given text.
NewFrame creates a new error frame.
NewWith creates a new error frame.
Summary returns summary of specified error.
Unwrap returns the result of calling the Unwrap method on err, if err's type contains an Unwrap method returning error.