Results for: "Array"

Displays an error statement to the error output location. Asks a question if given.

Displays a warning statement to the warning output location. Asks a question if given.

Terminates the RubyGems process with the given exit_code

Set the effective user ID, and if possible, the saved user ID of the process to the given user. Returns the new effective user ID. Not available on all platforms.

[Process.uid, Process.euid]          #=> [0, 0]
Process::UID.grant_privilege(31)     #=> 31
[Process.uid, Process.euid]          #=> [0, 31]

Set the effective group ID, and if possible, the saved group ID of the process to the given group. Returns the new effective group ID. Not available on all platforms.

[Process.gid, Process.egid]          #=> [0, 0]
Process::GID.grant_privilege(31)     #=> 33
[Process.gid, Process.egid]          #=> [0, 33]

def foo(&bar); end

^^^^

A block’s parameters.

def foo(…); bar(…); end

^^^

-> { it } ^^^^^^^^^

-> { _1 + _2 } ^^^^^^^^^^^^^^

def foo(bar = 1); end

^^^^^^^

def foo(bar); end

^^^

def foo(*bar); end

^^^^

def foo(*); end

^

def foo(&bar); end

^^^^

A block’s parameters.

def foo(…); bar(…); end

^^^

-> { _1 + _2 } ^^^^^^^^^^^^^^

def foo(bar = 1); end

^^^^^^^

def foo(bar); end

^^^

def foo(*bar); end

^^^^

def foo(*); end

^

Example:

x.foo += 42
         ^^

Example:

x[1] += 42
  ^^^^^^^^

Calls the given block with each successive grapheme cluster from self (see Unicode Grapheme Cluster Boundaries); returns self:

s = "\u0061\u0308-pqr-\u0062\u0308-xyz-\u0063\u0308" # => "ä-pqr-b̈-xyz-c̈"
s.each_grapheme_cluster {|gc| print gc, ' ' }

Output:

ä - p q r - b̈ - x y z - c̈

Returns an enumerator if no block is given.

Returns the value of the given instance variable, or nil if the instance variable is not set. The @ part of the variable name should be included for regular instance variables. Throws a NameError exception if the supplied symbol is not valid as an instance variable name. String arguments are converted to symbols.

class Fred
  def initialize(p1, p2)
    @a, @b = p1, p2
  end
end
fred = Fred.new('cat', 99)
fred.instance_variable_get(:@a)    #=> "cat"
fred.instance_variable_get("@b")   #=> 99