With a block given, calls the block with each repeated permutation of length size of the elements of self; each permutation is an array; returns self. The order of the permutations is indeterminate.
If a positive integer argument size is given, calls the block with each size-tuple repeated permutation of the elements of self. The number of permutations is self.size**size.
Examples:
size is 1:
p = [] [0, 1, 2].repeated_permutation(1) {|permutation| p.push(permutation) } p # => [[0], [1], [2]]
size is 2:
p = [] [0, 1, 2].repeated_permutation(2) {|permutation| p.push(permutation) } p # => [[0, 0], [0, 1], [0, 2], [1, 0], [1, 1], [1, 2], [2, 0], [2, 1], [2, 2]]
If size is zero, calls the block once with an empty array.
If size is negative, does not call the block:
[0, 1, 2].repeated_permutation(-1) {|permutation| fail 'Cannot happen' }
With no block given, returns a new Enumerator.
Related: see Methods for Combining.
Return the accept character set for all new CGI instances.
Returns the fractional part of the second in range (Rational(0, 1)…Rational(1, 1)):
DateTime.new(2001, 2, 3, 4, 5, 6.5).sec_fraction # => (1/2)
Returns the sharing detection flag as a boolean value. It is false (nil) by default.
Sets the sharing detection flag to b.
Returns the compiled instruction sequence represented by a RubyVM::InstructionSequence instance on the :script_compiled event.
Note that this method is CRuby-specific.
Returns the current execution stack—an array containing backtrace location objects.
See Thread::Backtrace::Location for more information.
The optional start parameter determines the number of initial stack entries to omit from the top of the stack.
A second optional length parameter can be used to limit how many entries are returned from the stack.
Returns nil if start is greater than the size of current execution stack.
Optionally you can pass a range, which will return an array containing the entries within the specified range.
Parse a file at filename. Returns the Psych::Nodes::Document.
Raises a Psych::SyntaxError when a YAML syntax error is detected.
Parse a YAML string in yaml. Returns the Psych::Nodes::Stream. This method can handle multiple YAML documents contained in yaml. filename is used in the exception message if a Psych::SyntaxError is raised.
If a block is given, a Psych::Nodes::Document node will be yielded to the block as it’s being parsed.
Raises a Psych::SyntaxError when a YAML syntax error is detected.
Example:
Psych.parse_stream("---\n - a\n - b") # => #<Psych::Nodes::Stream:0x00> Psych.parse_stream("--- a\n--- b") do |node| node # => #<Psych::Nodes::Document:0x00> end begin Psych.parse_stream("--- `", filename: "file.txt") rescue Psych::SyntaxError => ex ex.file # => 'file.txt' ex.message # => "(file.txt): found character that cannot start any token" end
Raises a TypeError when NilClass is passed.
See Psych::Nodes for more information about YAML AST.
Returns the version of libyaml being used
Returns the string which represents the version of zlib library.
A Gem::Version for the currently running Ruby.
A Gem::Version for the currently running RubyGems
Mirror the Prism.parse_file API by using the serialization API. This uses native strings instead of Ruby strings because it allows us to use mmap when it is available.
Mirror the Prism.parse_stream API by using the serialization API.
Mirror the Prism.parse_comments API by using the serialization API.
Mirror the Prism.parse_lex API by using the serialization API.
Mirror the Prism.parse_success? API by using the serialization API.
Mirror the Prism.parse_failure? API by using the serialization API.
Create a new OptionalParameterNode node.
Returns whether other_array has at least one element that is eql? to some element of self:
[1, 2, 3].intersect?([3, 4, 5]) # => true [1, 2, 3].intersect?([4, 5, 6]) # => false
Each element must correctly implement method hash.
Related: see Methods for Querying.
Returns a new array containing the elements of self in reverse order:
[0, 1, 2].reverse # => [2, 1, 0]
Related: see Methods for Combining.