Calls the given block for each element of self
and pass the
respective element.
ISO 15.2.14.4.4
# File mrblib/range.rb, line 12 def each(&block) return to_enum :each unless block val = self.first last = self.last if val.kind_of?(Fixnum) && last.kind_of?(Fixnum) # fixnums are special lim = last lim += 1 unless exclude_end? i = val while i < lim block.call(i) i += 1 end return self end if val.kind_of?(String) && last.kind_of?(String) # strings are special if val.respond_to? :upto return val.upto(last, exclude_end?, &block) else str_each = true end end raise TypeError, "can't iterate" unless val.respond_to? :succ return self if (val <=> last) > 0 while (val <=> last) < 0 block.call(val) val = val.succ if str_each break if val.size > last.size end end block.call(val) if !exclude_end? && (val <=> last) == 0 self end
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]
# File mrbgems/mruby-range-ext/mrblib/range.rb, line 13 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
redefine hash 15.3.1.3.15
# File mrblib/range.rb, line 54 def hash h = first.hash ^ last.hash h += 1 if self.exclude_end? h end
# File mrbgems/mruby-range-ext/mrblib/range.rb, line 29 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
# File mrbgems/mruby-range-ext/mrblib/range.rb, line 49 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