AddErrorCode takes an error and returns an instance satisfying the Error interface.

Extract the tag annotations from a struct into a string array.

NewError constructs an error with a code.

NewErrorContext constructs an error context with list of valid codes.

RandBool returns a random boolean value.

RandFloat64 returns a random float64.

RandInt returns a random int.

RandInt64 returns a random signed 64-bit int.

RandIntn returns a random int in the half-open interval [0,n).

RandomIPv4 returns, as a string, a random IP address.

RandomIPv6 returns, as a string, a random IPv6 address.

RandStr returns, as a string, a random 100 character alphanumeric, including '-' and '_'.

RandStrArray returns, as an array of 100 strings, with 100 character random alphanumeric, including '-' and '_'.

RandUint returns a random unsigned int.

RandUint64 returns a random unsigned 64-bit int.

SortErrors sorts the list of errors lexically.

when a default message already exists.

when a bad error code is given in creation of new error.

when the fmt string isn't a string.

when the error context is modifed after having created an error.

when creating an error with no error message, default message wasn't found.

ErrorContext regulates which error codes can be made and keeps a count of all the errors created through the context.

Error describes an interface that supports error codes.