Results for: "Array.new"

Not stable API

Lines that have a ‘on_ignored_nl` type token and NOT a `BEG` type seem to be a good proxy for the ability to join multiple lines into one.

This predicate method is used to determine when those two criteria have been met.

The one known case this doesn’t handle is:

Ripper.lex <<~EOM
  a &&
   b ||
   c
EOM

For some reason this introduces ‘on_ignore_newline` but with BEG type

Generates new parameters for the algorithm. algo_name is a String that represents the algorithm. The optional argument options is a Hash that specifies the options specific to the algorithm. The order of the options can be important.

A block can be passed optionally. The meaning of the arguments passed to the block varies depending on the implementation of the algorithm. The block may be called once or multiple times, or may not even be called.

For the supported options, see the documentation for the ‘openssl genpkey’ utility command.

Example

pkey = OpenSSL::PKey.generate_parameters("DSA", "dsa_paramgen_bits" => 2048)
p pkey.p.num_bits #=> 2048

Returns true if self is a Wednesday, false otherwise.

Returns true if self represents a Wednesday, false otherwise:

t = Time.utc(2000, 1, 5) # => 2000-01-05 00:00:00 UTC
t.wednesday?             # => true

Related: Time#thursday?, Time#friday?, Time#saturday?.

Add separator in summary.

Returns the parameter information of this proc. If the lambda keyword is provided and not nil, treats the proc as a lambda if true and as a non-lambda if false.

prc = proc{|x, y=42, *other|}
prc.parameters  #=> [[:opt, :x], [:opt, :y], [:rest, :other]]
prc = lambda{|x, y=42, *other|}
prc.parameters  #=> [[:req, :x], [:opt, :y], [:rest, :other]]
prc = proc{|x, y=42, *other|}
prc.parameters(lambda: true)  #=> [[:req, :x], [:opt, :y], [:rest, :other]]
prc = lambda{|x, y=42, *other|}
prc.parameters(lambda: false) #=> [[:opt, :x], [:opt, :y], [:rest, :other]]

Returns the parameter information of this method.

def foo(bar); end
method(:foo).parameters #=> [[:req, :bar]]

def foo(bar, baz, bat, &blk); end
method(:foo).parameters #=> [[:req, :bar], [:req, :baz], [:req, :bat], [:block, :blk]]

def foo(bar, *args); end
method(:foo).parameters #=> [[:req, :bar], [:rest, :args]]

def foo(bar, baz, *args, &blk); end
method(:foo).parameters #=> [[:req, :bar], [:req, :baz], [:rest, :args], [:block, :blk]]

Returns the parameter information of this method.

def foo(bar); end
method(:foo).parameters #=> [[:req, :bar]]

def foo(bar, baz, bat, &blk); end
method(:foo).parameters #=> [[:req, :bar], [:req, :baz], [:req, :bat], [:block, :blk]]

def foo(bar, *args); end
method(:foo).parameters #=> [[:req, :bar], [:rest, :args]]

def foo(bar, baz, *args, &blk); end
method(:foo).parameters #=> [[:req, :bar], [:req, :baz], [:rest, :args], [:block, :blk]]

Returns the parameter definitions of the method or block that the current hook belongs to. The format is the same as for Method#parameters.

Returns a String containing the generated JSON data.

See also JSON.fast_generate, JSON.pretty_generate.

Argument obj is the Ruby object to be converted to JSON.

Argument opts, if given, contains a Hash of options for the generation. See Generating Options.

When obj is an Array, returns a String containing a JSON array:

obj = ["foo", 1.0, true, false, nil]
json = JSON.generate(obj)
json # => '["foo",1.0,true,false,null]'

When obj is a Hash, returns a String containing a JSON object:

obj = {foo: 0, bar: 's', baz: :bat}
json = JSON.generate(obj)
json # => '{"foo":0,"bar":"s","baz":"bat"}'

For examples of generating from other Ruby objects, see Generating JSON from Other Objects.

Raises an exception if any formatting option is not a String.

Raises an exception if obj contains circular references:

a = []; b = []; a.push(b); b.push(a)
# Raises JSON::NestingError (nesting of 100 is too deep):
JSON.generate(a)

Returns the fractional part of the day in range (Rational(0, 1)…Rational(1, 1)):

DateTime.new(2001,2,3,12).day_fraction # => (1/2)

Equivalent to Date#+ with argument n.

Equivalent to >> with argument n * 12.

Erases the line at the cursor corresponding to mode. mode may be either: 0: after cursor 1: before and cursor 2: entire line

You must require ‘io/console’ to use this method.

Returns true if matching against re can be done in linear time to the input string.

Regexp.linear_time?(/re/) # => true

Note that this is a property of the ruby interpreter, not of the argument regular expression. Identical regexp can or cannot run in linear time depending on your ruby binary. Neither forward nor backward compatibility is guaranteed about the return value of this method. Our current algorithm is (*1) but this is subject to change in the future. Alternative implementations can also behave differently. They might always return false for everything.

(*1): doi.org/10.1109/SP40001.2021.00032

Controls tracing of assignments to global variables. The parameter symbol identifies the variable (as either a string name or a symbol identifier). cmd (which may be a string or a Proc object) or block is executed whenever the variable is assigned. The block or Proc object receives the variable’s new value as a parameter. Also see untrace_var.

trace_var :$_, proc {|v| puts "$_ is now '#{v}'" }
$_ = "hello"
$_ = ' there'

produces:

$_ is now 'hello'
$_ is now ' there'

Removes tracing for the specified command on the given global variable and returns nil. If no command is specified, removes all tracing for that variable and returns an array containing the commands actually removed.

Arguments obj and opts here are the same as arguments obj and opts in JSON.generate.

By default, generates JSON data without checking for circular references in obj (option max_nesting set to false, disabled).

Raises an exception if obj contains circular references:

a = []; b = []; a.push(b); b.push(a)
# Raises SystemStackError (stack level too deep):
JSON.fast_generate(a)

Arguments obj and opts here are the same as arguments obj and opts in JSON.generate.

Default options are:

{
  indent: '  ',   # Two spaces
  space: ' ',     # One space
  array_nl: "\n", # Newline
  object_nl: "\n" # Newline
}

Example:

obj = {foo: [:bar, :baz], bat: {bam: 0, bad: 1}}
json = JSON.pretty_generate(obj)
puts json

Output:

{
  "foo": [
    "bar",
    "baz"
  ],
  "bat": {
    "bam": 0,
    "bad": 1
  }
}

Returns garbage collector generation for the given object.

class B
  include ObjectSpace

  def foo
    trace_object_allocations do
      obj = Object.new
      p "Generation is #{allocation_generation(obj)}"
    end
  end
end

B.new.foo #=> "Generation is 3"

See ::trace_object_allocations for more information and examples.

How String Gem paths should be split. Overridable for esoteric platforms.

Adds DidYouMean functionality to an error using a given spell checker