class XML::NodeSet
inherits Reference
¶
Included modules
Enumerable
Class methods¶
Methods¶
#empty?
¶
Returns true if self is empty, false otherwise.
([] of Int32).empty? # => true
([1]).empty? # => false
#inspect(io : IO) : Nil
¶
(io : IO) : Nil
Appends a String representation of this object which includes its class name, its object address and the values of all instance variables.
class Person
def initialize(@name : String, @age : Int32)
end
end
Person.new("John", 32).inspect # => #<Person:0x10fd31f20 @name="John", @age=32>
#object_id
¶
Returns a UInt64 that uniquely identifies this object.
The returned value is the memory address of this object.
string = "hello"
string.object_id # => 4460249568
pointer = Pointer(String).new(string.object_id)
string2 = pointer.as(String)
string2.object_id == string.object_id # => true
#to_s(io : IO) : Nil
¶
(io : IO) : Nil
Appends a short String representation of this object which includes its class name and its object address.
class Person
def initialize(@name : String, @age : Int32)
end
end
Person.new("John", 32).to_s # => #<Person:0x10a199f20>