Returns the value as an Integer.
If the BigDecimal is infinity or NaN, raises FloatDomainError.
Converts a BigDecimal to a Rational.
Returns a new Float object having approximately the same value as the BigDecimal number. Normal accuracy limits and built-in errors of binary Float arithmetic apply.
Returns the value as a BigDecimal.
The required precision parameter is used to determine the number of significant digits for the result.
require 'bigdecimal' require 'bigdecimal/util' Rational(22, 7).to_d(3) # => 0.314e1
See also Kernel.BigDecimal.
Returns the truncated value as an integer.
Equivalent to Rational#truncate.
Rational(2, 3).to_i #=> 0 Rational(3).to_i #=> 3 Rational(300.6).to_i #=> 300 Rational(98, 71).to_i #=> 1 Rational(-31, 2).to_i #=> -15
Returns the value as a Float.
Rational(2).to_f #=> 2.0 Rational(9, 4).to_f #=> 2.25 Rational(-3, 4).to_f #=> -0.75 Rational(20, 3).to_f #=> 6.666666666666667
Returns the value as a string.
Rational(2).to_s #=> "2/1" Rational(-8, 6).to_s #=> "-4/3" Rational('1/2').to_s #=> "1/2"
Returns a string representation of the date in self in ISO 8601 extended date format ('%Y-%m-%d'):
Date.new(2001, 2, 3).to_s # => "2001-02-03"
Returns a string in an ISO 8601 format. (This method doesn’t use the expanded representations.)
DateTime.new(2001,2,3,4,5,6,'-7').to_s #=> "2001-02-03T04:05:06-07:00"
Returns the value of self as integer Epoch seconds; subseconds are truncated (not rounded):
Time.utc(1970, 1, 1, 0, 0, 0).to_i # => 0 Time.utc(1970, 1, 1, 0, 0, 0, 999999).to_i # => 0 Time.utc(1950, 1, 1, 0, 0, 0).to_i # => -631152000 Time.utc(1990, 1, 1, 0, 0, 0).to_i # => 631152000
Returns the value of self as a Float number Epoch seconds; subseconds are included.
The stored value of self is a Rational, which means that the returned value may be approximate:
Time.utc(1970, 1, 1, 0, 0, 0).to_f # => 0.0 Time.utc(1970, 1, 1, 0, 0, 0, 999999).to_f # => 0.999999 Time.utc(1950, 1, 1, 0, 0, 0).to_f # => -631152000.0 Time.utc(1990, 1, 1, 0, 0, 0).to_f # => 631152000.0
Returns the value of self as a Rational exact number of Epoch seconds;
Time.now.to_r # => (16571402750320203/10000000)
Returns a string representation of self, without subseconds:
t = Time.new(2000, 12, 31, 23, 59, 59, 0.5) t.to_s # => "2000-12-31 23:59:59 +0000"
Related: Time#ctime, Time#inspect:
t.ctime # => "Sun Dec 31 23:59:59 2000" t.inspect # => "2000-12-31 23:59:59.5 +000001"
Returns a 10-element array of values representing self:
Time.utc(2000, 1, 1).to_a # => [0, 0, 0, 1, 1, 2000, 6, 1, false, "UTC"] # [sec, min, hour, day, mon, year, wday, yday, dst?, zone]
The returned array is suitable for use as an argument to Time.utc or Time.local to create a new Time object.
Returns the integer file descriptor for the stream:
$stdin.fileno # => 0 $stdout.fileno # => 1 $stderr.fileno # => 2 File.open('t.txt').fileno # => 10 f.close
Returns an array containing the elements in self, if a finite collection; raises an exception otherwise.
(1..4).to_a # => [1, 2, 3, 4] (1...4).to_a # => [1, 2, 3] ('a'..'d').to_a # => ["a", "b", "c", "d"]
Returns a string representation of self, including begin.to_s and end.to_s:
(1..4).to_s # => "1..4" (1...4).to_s # => "1...4" (1..).to_s # => "1.." (..4).to_s # => "..4"
Note that returns from to_s and inspect may differ:
('a'..'d').to_s # => "a..d" ('a'..'d').inspect # => "\"a\"..\"d\""
Related: Range#inspect.
Returns a string showing the options and string of self:
r0 = /ab+c/ix s0 = r0.to_s # => "(?ix-m:ab+c)"
The returned string may be used as an argument to Regexp.new, or as interpolated text for a Regexp interpolation:
r1 = Regexp.new(s0) # => /(?ix-m:ab+c)/ r2 = /#{s0}/ # => /(?ix-m:ab+c)/
Note that r1 and r2 are not equal to r0 because their original strings are different:
r0 == r1 # => false r0.source # => "ab+c" r1.source # => "(?ix-m:ab+c)"
Related: Regexp#inspect.
Converts the set to an array. The order of elements is uncertain.
Set[1, 2].to_a #=> [1, 2] Set[1, 'c', :s].to_a #=> [1, "c", :s]
Returns the values in self as an array:
Customer = Struct.new(:name, :address, :zip) joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345) joe.to_a # => ["Joe Smith", "123 Maple, Anytown NC", 12345]
Related: members.