Results for: "String#[]"

Check if gem name version version is installed.

True if the requested gem has already been installed.

Installing a git gem only involves building the extensions and generating the executables.

This is a null install as this specification is already installed. options are ignored.

This is a null install as a locked specification is considered installed. options are ignored.

Installs this specification using the Gem::Installer options. The install method yields a Gem::Installer instance, which indicates the gem will be installed, or nil, which indicates the gem is already installed.

After installation spec is updated to point to the just-installed specification.

This is a null install as this gem was unpacked into a directory. options are ignored.

This integer returns the maximum level of data structure nesting in the generated JSON, max_nesting = 0 if no maximum is checked.

This sets the maximum level of data structure nesting in the generated JSON to the integer depth, max_nesting = 0 if no maximum should be checked.

Re-composes a prime factorization and returns the product.

Parameters

pd

Array of pairs of integers. The each internal pair consists of a prime number – a prime factor – and a natural number – an exponent.

Example

For [[p_1, e_1], [p_2, e_2], ...., [p_n, e_n]], it returns:

p_1**e_1 * p_2**e_2 * .... * p_n**e_n.

Prime.int_from_prime_division([[2,2], [3,1]])  #=> 12

Starts tracing object allocations.

Stop tracing object allocations.

Note that if ::trace_object_allocations_start is called n-times, then tracing will stop after calling ::trace_object_allocations_stop n-times.

The index to insert activated gem paths into the $LOAD_PATH. The activated gem’s paths are inserted before site lib directory by default.

Convert internal ID of token symbol to the string.

Extracts ifindex from IPV6_PKTINFO ancillary data.

IPV6_PKTINFO is defined by RFC 3542.

addr = Addrinfo.ip("::1")
ifindex = 0
ancdata = Socket::AncillaryData.ipv6_pktinfo(addr, ifindex)
p ancdata.ipv6_pktinfo_ifindex #=> 0

Creates a regular expression to match IPv4 addresses

Opens a message writer stream and gives it to the block. The stream is valid only in the block, and has these methods:

puts(str = ”)

outputs STR and CR LF.

print(str)

outputs STR.

printf(fmt, *args)

outputs sprintf(fmt,*args).

write(str)

outputs STR and returns the length of written bytes.

<<(str)

outputs STR and returns self.

If a single CR (“r”) or LF (“n”) is found in the message, it is converted to the CR LF pair. You cannot send a binary message with this method.

Parameters

from_addr is a String representing the source mail address.

to_addr is a String or Strings or Array of Strings, representing the destination mail address or addresses.

Example

Net::SMTP.start('smtp.example.com', 25) do |smtp|
  smtp.open_message_stream('from@example.com', ['dest@example.com']) do |f|
    f.puts 'From: from@example.com'
    f.puts 'To: dest@example.com'
    f.puts 'Subject: test message'
    f.puts
    f.puts 'This is a test message.'
  end
end

Errors

This method may raise:

• Net::SMTPServerBusy

• Net::SMTPSyntaxError

• Net::SMTPFatalError

• Net::SMTPUnknownError

• Net::ReadTimeout

• IOError