Remove the oldest DependencyRequest from the list.
The file descriptor for the socket.
Unwinds the states stack because a conflict has been encountered @return [void]
@param [DependencyState] state @param [Array] binding_requirements array of requirements @return [Boolean] whether or not the given state has any possibilities
that could satisfy the given requirements
If object
is an Array object, returns object
.
Otherwise if object
responds to :to_ary
, calls object.to_ary
and returns the result.
Returns nil
if object
does not respond to :to_ary
Raises an exception unless object.to_ary
returns an Array object.
Replaces the content of self
with the content of other_array
; returns self
:
a = [:foo, 'bar', 2] a.replace(['foo', :bar, 3]) # => ["foo", :bar, 3]
Returns an integer identifier for obj
.
The same number will be returned on all calls to object_id
for a given object, and no two active objects will share an id.
Note: that some objects of builtin classes are reused for optimization. This is the case for immediate values and frozen string literals.
BasicObject
implements __id__
, Kernel
implements object_id
.
Immediate values are not passed by reference but are passed by value: nil
, true
, false
, Fixnums, Symbols, and some Floats.
Object.new.object_id == Object.new.object_id # => false (21 * 2).object_id == (21 * 2).object_id # => true "hello".object_id == "hello".object_id # => false "hi".freeze.object_id == "hi".freeze.object_id # => true
Returns true
if obj is an instance of the given class. See also Object#kind_of?
.
class A; end class B < A; end class C < B; end b = B.new b.instance_of? A #=> false b.instance_of? B #=> true b.instance_of? C #=> false
Returns true
if obj responds to the given method. Private and protected methods are included in the search only if the optional second parameter evaluates to true
.
If the method is not implemented, as Process.fork
on Windows, File.lchmod
on GNU/Linux, etc., false is returned.
If the method is not defined, respond_to_missing?
method is called and the result is returned.
When the method name parameter is given as a string, the string is converted to a symbol.
Returns a hash, that will be turned into a JSON
object and represent this object.
If object
is a String object, returns object
.
Otherwise if object
responds to :to_str
, calls object.to_str
and returns the result.
Returns nil
if object
does not respond to :to_str
Raises an exception unless object.to_str
returns a String object.
Replaces the contents of str with the corresponding values in other_str.
s = "hello" #=> "hello" s.replace "world" #=> "world"
Returns true for a string which has only ASCII characters.
"abc".force_encoding("UTF-8").ascii_only? #=> true "abc\u{6666}".force_encoding("UTF-8").ascii_only? #=> false
Iterates the given block for each element with an arbitrary object, obj
, and returns obj
If no block is given, returns a new Enumerator
.
to_three = Enumerator.new do |y| 3.times do |x| y << x end end to_three_with_string = to_three.with_object("foo") to_three_with_string.each do |x,string| puts "#{string}: #{x}" end # => foo: 0 # => foo: 1 # => foo: 2
Deserializes JSON
string by constructing new Exception
object with message m
and backtrace b
serialized with to_json
Returns a hash, that will be turned into a JSON
object and represent this object.