Results for: "remove_const"

Returns an array of the names of singleton methods for obj. If the optional all parameter is true, the list will include methods in modules included in obj. Only public and protected singleton methods are returned.

module Other
  def three() end
end

class Single
  def Single.four() end
end

a = Single.new

def a.one()
end

class << a
  include Other
  def two()
  end
end

Single.singleton_methods    #=> [:four]
a.singleton_methods(false)  #=> [:two, :one]
a.singleton_methods         #=> [:two, :one, :three]

Similar to method, searches singleton method only.

class Demo
  def initialize(n)
    @iv = n
  end
  def hello()
    "Hello, @iv = #{@iv}"
  end
end

k = Demo.new(99)
def k.hi
  "Hi, @iv = #{@iv}"
end
m = k.singleton_method(:hi)
m.call   #=> "Hi, @iv = 99"
m = k.singleton_method(:hello) #=> NameError

Returns a hash, that will be turned into a JSON object and represent this object.

Stores class name (Exception) with message m and backtrace array b as JSON string

Returns true if mod is a singleton class or false if it is an ordinary class or module.

class C
end
C.singleton_class?                  #=> false
C.singleton_class.singleton_class?  #=> true

Marshal the object to JSON.

method used for JSON marshalling support.

return the JSON value

Returns a hash, that will be turned into a JSON object and represent this object.

Stores class name (Rational) along with numerator value n and denominator value d as JSON string

Returns true if the arguments define a valid commercial date, false otherwise:

Date.valid_commercial?(2001, 5, 6) # => true
Date.valid_commercial?(2001, 5, 8) # => false

See Date.commercial.

See argument start.

Related: Date.jd, Date.commercial.

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)

Returns a copy of self with the given start value:

d0 = Date.new(2000, 2, 3)
d0.julian? # => false
d1 = d0.new_start(Date::JULIAN)
d1.julian? # => true

See argument start.

Returns a hash, that will be turned into a JSON object and represent this object.

Stores class name (Date) with Julian year y, month m, day d and Day of Calendar Reform sg as JSON string

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

DateTime.new(2001, 2, 3, 4, 5, 6.5).sec_fraction # => (1/2)

Date#second_fraction is an alias for Date#sec_fraction.

Returns a hash, that will be turned into a JSON object and represent this object.

Stores class name (DateTime) with Julian year y, month m, day d, hour H, minute M, second S, offset of and Day of Calendar Reform sg as JSON string

Returns a hash, that will be turned into a JSON object and represent this object.

Stores class name (Time) with number of seconds since epoch and number of microseconds for Time as JSON string

Return the number of seconds the specified time zone differs from UTC.

Numeric time zones that include minutes, such as -10:00 or +1330 will work, as will simpler hour-only time zones like -10 or +13.

Textual time zones listed in ZoneOffset are also supported.

If the time zone does not match any of the above, zone_offset will check if the local time zone (both with and without potential Daylight Saving Time changes being in effect) matches zone. Specifying a value for year will change the year used to find the local time zone.

If zone_offset is unable to determine the offset, nil will be returned.

require 'time'

Time.zone_offset("EST") #=> -18000

You must require ‘time’ to use this method.

Returns the number of nanoseconds in the subseconds part of self in the range (0..999_999_999); lower-order digits are truncated, not rounded:

t = Time.now # => 2022-07-11 15:04:53.3219637 -0500
t.nsec       # => 321963700

Related: Time#subsec (returns exact subseconds).

Time#tv_nsec is an alias for Time#usec.

Calls the given block with each codepoint in the stream; returns self:

f = File.new('t.rus')
a = []
f.each_codepoint {|c| a << c }
a # => [1090, 1077, 1089, 1090]
f.close

Returns an Enumerator if no block is given.

Related: IO#each_byte, IO#each_char.

Returns the Encoding object that represents the encoding of the stream, or nil if the stream is in write mode and no encoding is specified.

See Encodings.

Returns the Encoding object that represents the encoding of the internal string, if conversion is specified, or nil otherwise.

See Encodings.