Returns true if the given instance variable is defined in obj. String arguments are converted to symbols.
class Fred def initialize(p1, p2) @a, @b = p1, p2 end end fred = Fred.new('cat', 99) fred.instance_variable_defined?(:@a) #=> true fred.instance_variable_defined?("@b") #=> true fred.instance_variable_defined?("@c") #=> false
Sets the temporary name of the module. This name is reflected in introspection of the module and the values that are related to it, such as instances, constants, and methods.
The name should be nil or a non-empty string that is not a valid constant path (to avoid confusing between permanent and temporary names).
The method can be useful to distinguish dynamically generated classes and modules without assigning them to constants.
If the module is given a permanent name by assigning it to a constant, the temporary name is discarded. A temporary name can’t be assigned to modules that have a permanent name.
If the given name is nil, the module becomes anonymous again.
Example:
m = Module.new # => #<Module:0x0000000102c68f38> m.name #=> nil m.set_temporary_name("fake_name") # => fake_name m.name #=> "fake_name" m.set_temporary_name(nil) # => #<Module:0x0000000102c68f38> m.name #=> nil c = Class.new c.set_temporary_name("MyClass(with description)") c.new # => #<MyClass(with description):0x0....> c::M = m c::M.name #=> "MyClass(with description)::M" # Assigning to a constant replaces the name with a permanent one C = c C.name #=> "C" C::M.name #=> "C::M" c.new # => #<C:0x0....>
Returns true if the given class variable is defined in obj. String arguments are converted to symbols.
class Fred @@foo = 99 end Fred.class_variable_defined?(:@@foo) #=> true Fred.class_variable_defined?(:@@bar) #=> false
Returns true if a local variable symbol exists.
def foo a = 1 binding.local_variable_defined?(:a) #=> true binding.local_variable_defined?(:b) #=> false end
This method is the short version of the following code:
binding.eval("defined?(#{symbol}) == 'local-variable'")
Suffixes for dynamic library require-able paths.
Returns strongly connected components as an array of arrays of nodes. The array is sorted from children to parents. Each elements of the array represents a strongly connected component.
class G include TSort def initialize(g) @g = g end def tsort_each_child(n, &b) @g[n].each(&b) end def tsort_each_node(&b) @g.each_key(&b) end end graph = G.new({1=>[2, 3], 2=>[4], 3=>[2, 4], 4=>[]}) p graph.strongly_connected_components #=> [[4], [2], [3], [1]] graph = G.new({1=>[2], 2=>[3, 4], 3=>[2], 4=>[]}) p graph.strongly_connected_components #=> [[4], [2, 3], [1]]
Returns strongly connected components as an array of arrays of nodes. The array is sorted from children to parents. Each elements of the array represents a strongly connected component.
The graph is represented by each_node and each_child. each_node should have call method which yields for each node in the graph. each_child should have call method which takes a node argument and yields for each child node.
g = {1=>[2, 3], 2=>[4], 3=>[2, 4], 4=>[]} each_node = lambda {|&b| g.each_key(&b) } each_child = lambda {|n, &b| g[n].each(&b) } p TSort.strongly_connected_components(each_node, each_child) #=> [[4], [2], [3], [1]] g = {1=>[2], 2=>[3, 4], 3=>[2], 4=>[]} each_node = lambda {|&b| g.each_key(&b) } each_child = lambda {|n, &b| g[n].each(&b) } p TSort.strongly_connected_components(each_node, each_child) #=> [[4], [2, 3], [1]]
Generates a cryptographically strong pseudo-random number in the range 0…range.
See also the man page BN_rand_range(3).
Generates a random prime number of bit length bits. If safe is set to true, generates a safe prime. If add is specified, generates a prime that fulfills condition p % add = rem.
Returns the size of arguments of the method.
tobj = WIN32OLE::Type.new('Microsoft Excel 9.0 Object Library', 'Workbook') method = WIN32OLE::Method.new(tobj, 'SaveAs') puts method.size_params # => 11
Returns library name. If the method fails to access library name, WIN32OLE::RuntimeError is raised.
tlib = WIN32OLE::TypeLib.new('Microsoft Excel 9.0 Object Library') tlib.library_name # => Excel
Delegates to the start_line of the associated location object.
def repeated_parameter?: () -> bool
def repeated_parameter?: () -> bool
def repeated_parameter?: () -> bool
def repeated_parameter?: () -> bool
def repeated_parameter?: () -> bool
def repeated_parameter?: () -> bool
def repeated_parameter?: () -> bool
def repeated_parameter?: () -> bool
Return the byte offset of the start of the line corresponding to the given byte offset.
Return the character offset for the given byte offset.
Return the column number in characters for the given byte offset.