isLenient
Specifies the lenient property, a CFBoolean object where a true value indicates that the parsing of strings into date or absolute time values will be fuzzy.
Declaration
static let isLenient: CFDateFormatterKey!Discussion
The formatter will use heuristics to guess at the date which is intended by the string. As with any guessing, it may get the result date wrong (that is, a date other than that which was intended).