GenCode 获取随机码.

Left left-pads the string with pad up to len runes len may be exceeded if.

LeftUtf8 left-pads the string with pad up to len runes len may be exceeded if.

MustString Create uuid.

MustUUID Create uuid(Throw panic if something goes wrong).

NewUUID Create uuid.

Right right-pads the string with pad up to len runes.

RightUtf8 right-pads the string with pad up to len runes.

TraceID TraceID.

UUID Define alias.