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Versions: 8
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Stored size: 1.4 KB
Contents
class Range
##
# call-seq:
# rng.first -> obj
# rng.first(n) -> an_array
#
# Returns the first object in the range, or an array of the first +n+
# elements.
#
# (10..20).first #=> 10
# (10..20).first(3) #=> [10, 11, 12]
#
def first(*args)
return self.begin if args.empty?
raise ArgumentError, "wrong number of arguments (given #{args.length}, expected 1)" unless args.length == 1
nv = args[0]
n = nv.__to_int
raise ArgumentError, "negative array size (or size too big)" unless 0 <= n
ary = []
each do |i|
break if n <= 0
ary.push(i)
n -= 1
end
ary
end
def max(&block)
val = self.first
last = self.last
return super if block
# fast path for numerics
if val.kind_of?(Numeric) && last.kind_of?(Numeric)
raise TypeError if exclude_end? && !last.kind_of?(Fixnum)
return nil if val > last
return nil if val == last && exclude_end?
max = last
max -= 1 if exclude_end?
return max
end
# delegate to Enumerable
super
end
def min(&block)
val = self.first
last = self.last
return super if block
# fast path for numerics
if val.kind_of?(Numeric) && last.kind_of?(Numeric)
return nil if val > last
return nil if val == last && exclude_end?
min = val
return min
end
# delegate to Enumerable
super
end
end
Version data entries
8 entries across 8 versions & 1 rubygems