Results for: "partition"

StringScanner#check_until

Attempts to [match] the given pattern anywhere (at any [position]) in the [target substring]; does not modify the [positions].

If the match succeeds:

Sets all [match values].
Returns the matched substring, which extends from the current [position] to the end of the matched substring.

scanner = StringScanner.new('foobarbazbatbam')
scanner.pos = 6
scanner.check_until(/bat/) # => "bazbat"
put_match_values(scanner)
# Basic match values:
#   matched?:       true
#   matched_size:   3
#   pre_match:      "foobarbaz"
#   matched  :      "bat"
#   post_match:     "bam"
# Captured match values:
#   size:           1
#   captures:       []
#   named_captures: {}
#   values_at:      ["bat", nil]
#   []:
#     [0]:          "bat"
#     [1]:          nil
put_situation(scanner)
# Situation:
#   pos:       6
#   charpos:   6
#   rest:      "bazbatbam"
#   rest_size: 9

If the match fails:

Clears all [match values].
Returns nil.

scanner.check_until(/nope/)    # => nil
match_values_cleared?(scanner) # => true

Hash::try_convert

If object is a hash, returns object.

Otherwise if object responds to :to_hash, calls object.to_hash; returns the result if it is a hash, or raises TypeError if not.

Otherwise if object does not respond to :to_hash, returns nil.

IPAddr#ip6_arpa

Returns a string for DNS reverse lookup compatible with RFC3172.

OptionParser::show_version

Shows version string in packages if Version is defined.

pkgs: package list

Ruby tries to load the library named string relative to the directory containing the requiring file. If the file does not exist a LoadError is raised. Returns true if the file was loaded and false if the file was already loaded before.

MonitorMixin#mon_exit

Leaves exclusive section.

MonitorMixin#mon_synchronize

Enters exclusive section and executes the block. Leaves the exclusive section automatically when the block exits. See example under MonitorMixin.

OpenSSL::secure_compare

Constant time memory comparison. Inputs are hashed using SHA-256 to mask the length of the secret. Returns true if the strings are identical, false otherwise.

Psych::parse_file

Parse a file at filename. Returns the Psych::Nodes::Document.

Raises a Psych::SyntaxError when a YAML syntax error is detected.

Psych::parse_stream

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