BadFieldErrorFromStr attempts to convert a string to a BadFieldError.

CallIfNil calls f if err is nil.

FieldError creates an instance of BadFieldError without an index.

FieldErrorWithIndex creates an instance of BadFieldError with an index.

ReqErr creates ReqError.

ReqErrorFromStr attempts to convert a string to a ReqError.

BadFieldError implements error.

ReqError describes an error consumable by http services.