XML::NodeSet

Must yield this collection's elements to the block.

Returns true if self does not contain any element.

([] of Int32).empty? # => true
([1]).empty?         # => false
[nil, false].empty?  # => false

• #present? returns the inverse.

Appends this struct's name and instance variables names and values to the given IO.

struct Point
  def initialize(@x : Int32, @y : Int32)
  end
end

p1 = Point.new 1, 2
p1.to_s    # "Point(@x=1, @y=2)"
p1.inspect # "Point(@x=1, @y=2)"

Pretty prints self into the given printer.

By default appends a text that is the result of invoking #inspect on self. Subclasses should override for custom pretty printing.

Returns the number of elements in the collection.

[1, 2, 3, 4].size # => 4

Same as #inspect(io).