A Location
object representing the location of this token in the source.
Recursively walk dependencies of this spec, executing the block
for each hop.
Example:
combination([:a, :b, :c, :d]) # => [[:a], [:b], [:c], [:d], [:a, :b], [:a, :c], [:a, :d], [:b, :c], [:b, :d], [:c, :d], [:a, :b, :c], [:a, :b, :d], [:a, :c, :d], [:b, :c, :d], [:a, :b, :c, :d]]
If a block is given, it prints out each of the elements encountered. Block parameters are (in that order):
depth: The recursion depth, plus one with each constructed value being encountered (Integer
)
offset: Current byte offset (Integer
)
header length: Combined length in bytes of the Tag and Length headers. (Integer
)
length: The overall remaining length of the entire data (Integer
)
constructed: Whether this value is constructed or not (Boolean
)
tag_class: Current tag class (Symbol
)
tag: The current tag number (Integer
)
der = File.binread('asn1data.der') OpenSSL::ASN1.traverse(der) do | depth, offset, header_len, length, constructed, tag_class, tag| puts "Depth: #{depth} Offset: #{offset} Length: #{length}" puts "Header length: #{header_len} Tag: #{tag} Tag class: #{tag_class} Constructed: #{constructed}" end
Reads at most maxlen bytes from the stream. If buf is provided it must reference a string which will receive the data.
See IO#readpartial
for full details.
returns a charset parameter in Content-Type field. It is downcased for canonicalization.
If charset parameter is not given but a block is given, the block is called and its result is returned. It can be used to guess charset.
If charset parameter and block is not given, nil is returned except text type. In that case, “utf-8” is returned as defined by RFC6838 4.2.1
Gets various OpenSSL options.
Sets various OpenSSL options. The options are a bit field and can be combined with the bitwise OR operator (|
). Available options are defined as constants in OpenSSL::SSL
that begin with OP_
.
For backwards compatibility, passing nil
has the same effect as passing OpenSSL::SSL::OP_ALL.
See also man page SSL_CTX_set_options(3).
Returns a new array that is the union of the elements of self
and all given arrays other_arrays
; items are compared using eql?
:
[0, 1, 2, 3].union([4, 5], [6, 7]) # => [0, 1, 2, 3, 4, 5, 6, 7]
Removes duplicates (preserving the first found):
[0, 1, 1].union([2, 1], [3, 1]) # => [0, 1, 2, 3]
Preserves order (preserving the position of the first found):
[3, 2, 1, 0].union([5, 3], [4, 2]) # => [3, 2, 1, 0, 5, 4]
With no arguments given, returns a copy of self
.
Related: see Methods for Combining.
Inserts the given objects
as elements of self
; returns self
.
When index
is non-negative, inserts objects
before the element at offset index
:
a = ['a', 'b', 'c'] # => ["a", "b", "c"] a.insert(1, :x, :y, :z) # => ["a", :x, :y, :z, "b", "c"]
Extends the array if index
is beyond the array (index >= self.size
):
a = ['a', 'b', 'c'] # => ["a", "b", "c"] a.insert(5, :x, :y, :z) # => ["a", "b", "c", nil, nil, :x, :y, :z]
When index
is negative, inserts objects
after the element at offset index + self.size
:
a = ['a', 'b', 'c'] # => ["a", "b", "c"] a.insert(-2, :x, :y, :z) # => ["a", "b", :x, :y, :z, "c"]
With no objects
given, does nothing:
a = ['a', 'b', 'c'] # => ["a", "b", "c"] a.insert(1) # => ["a", "b", "c"] a.insert(50) # => ["a", "b", "c"] a.insert(-50) # => ["a", "b", "c"]
Raises IndexError
if objects
are given and index
is negative and out of range.
Related: see Methods for Assigning.
Returns the element from self
found by a binary search, or nil
if the search found no suitable element.
See Binary Searching.
Related: see Methods for Fetching.
Returns self
if self
is not a zero value, nil
otherwise; uses method zero?
for the evaluation.
The returned self
allows the method to be chained:
a = %w[z Bb bB bb BB a aA Aa AA A] a.sort {|a, b| (a.downcase <=> b.downcase).nonzero? || a <=> b } # => ["A", "a", "AA", "Aa", "aA", "BB", "Bb", "bB", "bb", "z"]
Of the Core and Standard Library classes, Integer
, Float
, Rational
, and Complex
use this implementation.
Related: zero?
Extracts data from self
.
If block
is not given, forming objects that become the elements of a new array, and returns that array. Otherwise, yields each object.
See Packed Data.
Like String#unpack
, but unpacks and returns only the first extracted object. See Packed Data.
Inserts the given other_string
into self
; returns self
.
If the Integer
index
is positive, inserts other_string
at offset index
:
'foo'.insert(1, 'bar') # => "fbaroo"
If the Integer
index
is negative, counts backward from the end of self
and inserts other_string
at offset index+1
(that is, after self[index]
):
'foo'.insert(-2, 'bar') # => "fobaro"
Returns an array of the characters in self
:
'hello'.chars # => ["h", "e", "l", "l", "o"] 'тест'.chars # => ["т", "е", "с", "т"] 'こんにちは'.chars # => ["こ", "ん", "に", "ち", "は"]