Removes the file entry given by path, which should be the entry for a regular file or a symbolic link.
Argument path should be interpretable as a path.
Optional argument force specifies whether to ignore raised exceptions of StandardError and its descendants.
Related: methods for deleting.
Removes the file entry given by path, which should be the entry for a regular file or a symbolic link.
Argument path should be interpretable as a path.
Optional argument force specifies whether to ignore raised exceptions of StandardError and its descendants.
Related: methods for deleting.
Takes a hash as its argument. The key is a symbol or an array of symbols. These symbols correspond to method names. The value is the accessor to which the methods will be delegated.
Creates a stub Makefile.
Processes the data contents of the “depend” file. Each line of this file is expected to be a file name.
Returns the output of findings, in Makefile format.
Mirror the Prism.dump_file API by using the serialization API.
Mirror the Prism.lex_file API by using the serialization API.
Mirror the Prism.profile_file API by using the serialization API.
Returns the BubbleBabble encoded hash value of a given string.
Returns an integer representing the permission bits of stat. The meaning of the bits is platform dependent; on Unix systems, see stat(2).
File.chmod(0644, "testfile") #=> 1 s = File.stat("testfile") sprintf("%o", s.mode) #=> "100644"
Returns the resulting hash value in a Bubblebabble encoded form.
Create a new RescueModifierNode node.
Attempts to return an array, based on the given object.
If object is an array, returns object.
Otherwise if object responds to :to_ary. calls object.to_ary: if the return value is an array or nil, returns that value; if not, raises TypeError.
Otherwise returns nil.
Related: see Methods for Creating an Array.
Replaces the elements of self with the elements of other_array, which must be an array-convertible object; returns self:
a = ['a', 'b', 'c'] # => ["a", "b", "c"] a.replace(['d', 'e']) # => ["d", "e"]
Related: see Methods for Assigning.
If object is an Integer object, returns object.
Integer.try_convert(1) # => 1
Otherwise if object responds to :to_int, calls object.to_int and returns the result.
Integer.try_convert(1.25) # => 1
Returns nil if object does not respond to :to_int
Integer.try_convert([]) # => nil
Raises an exception unless object.to_int returns an Integer object.
Methods Complex#as_json and Complex.json_create may be used to serialize and deserialize a Complex object; see Marshal.
Method Complex#as_json serializes self, returning a 2-element hash representing self:
require 'json/add/complex' x = Complex(2).as_json # => {"json_class"=>"Complex", "r"=>2, "i"=>0} y = Complex(2.0, 4).as_json # => {"json_class"=>"Complex", "r"=>2.0, "i"=>4}
Method JSON.create deserializes such a hash, returning a Complex object:
Complex.json_create(x) # => (2+0i) Complex.json_create(y) # => (2.0+4i)
Returns a JSON string representing self:
require 'json/add/complex' puts Complex(2).to_json puts Complex(2.0, 4).to_json
Output:
{"json_class":"Complex","r":2,"i":0}
{"json_class":"Complex","r":2.0,"i":4}
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 self with the contents of other_string:
s = 'foo' # => "foo" s.replace('bar') # => "bar"
Returns true if self contains only ASCII characters, false otherwise:
'abc'.ascii_only? # => true "abc\u{6666}".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
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