Duration.fromParts constructor
Construct a new duration from a map of parts
Implementation
Duration.fromParts(Map<String, num> parts)
: years = parts['years'] ?? 0,
months = parts['months'] ?? 0,
weeks = parts['weeks'] ?? 0,
days = parts['days'] ?? 0,
hours = parts['hours'] ?? 0,
minutes = parts['minutes'] ?? 0,
seconds = parts['seconds'] ?? 0;