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Contents
# frozen_string_literal: true
class ReeDatetime::Change
include Ree::FnDSL
fn :change
doc(<<~DOC)
Returns a new date/time where one or more of the elements have been changed
according to the +opts+ parameter.
DOC
contract(
DateTime,
Ksplat[
year?: Integer,
month?: Integer,
day?: Integer,
hour?: Integer,
min?: Integer,
sec?: Integer,
nsec?: Integer,
usec?: Integer,
offset?: Rational,
] => DateTime
).throws(ArgumentError)
def call(date_time, **opts)
if opts[:nsec]
raise ArgumentError, "Can't change both :nsec and :usec at the same time" if opts[:usec]
new_fraction = Rational(opts[:nsec], 1000000000).to_f
raise ArgumentError, "argument out of range" if new_fraction >= 1
elsif opts[:usec]
new_fraction = Rational(opts[:usec], 1000000).to_f
raise ArgumentError, "argument out of range" if new_fraction >= 1
end
DateTime.new(
opts[:year] || date_time.year,
opts[:month] || date_time.month,
opts[:day] || date_time.day,
opts[:hour] || date_time.hour,
opts[:min] || date_time.min,
(opts[:sec] || date_time.sec).to_f + (new_fraction || 0),
opts[:offset] || date_time.offset
)
end
end
Version data entries
126 entries across 126 versions & 1 rubygems