Results for: "OptionParser"

Returns an array; [cmp.real, cmp.imag].

Complex(1, 2).rectangular  #=> [1, 2]

Returns an array; [cmp.abs, cmp.arg].

Complex(1, 2).polar  #=> [2.23606797749979, 1.1071487177940904]

Returns the complex conjugate.

Complex(1, 2).conjugate  #=> (1-2i)

Returns the complex conjugate.

Complex(1, 2).conjugate  #=> (1-2i)

Returns the numerator.

    1   2       3+4i  <-  numerator
    - + -i  ->  ----
    2   3        6    <-  denominator

c = Complex('1/2+2/3i')  #=> ((1/2)+(2/3)*i)
n = c.numerator          #=> (3+4i)
d = c.denominator        #=> 6
n / d                    #=> ((1/2)+(2/3)*i)
Complex(Rational(n.real, d), Rational(n.imag, d))
                         #=> ((1/2)+(2/3)*i)

See denominator.

Returns zero.

Returns 0 if the value is positive, pi otherwise.

Returns 0 if the value is positive, pi otherwise.

Returns an array; [num, 0].

Returns an array; [num.abs, num.arg].

Returns self.

Returns self.

If a numeric is the same type as num, returns an array containing numeric and num. Otherwise, returns an array with both a numeric and num represented as Float objects.

This coercion mechanism is used by Ruby to handle mixed-type numeric operations: it is intended to find a compatible common type between the two operands of the operator.

1.coerce(2.5)   #=> [2.5, 1.0]
1.2.coerce(3)   #=> [3.0, 1.2]
1.coerce(2)     #=> [2, 1]

x.remainder(y) means x-y*(x/y).truncate

See Numeric#divmod.

Returns true if num is an Integer.

(1.0).integer? #=> false
(1).integer?   #=> true

Returns true if num has a zero value.

Returns true if num is greater than 0.

Returns true if num is less than 0.

Returns the numerator.

Convert self to to_enc. to_enc and from_enc are given as constants of Kconv or Encoding objects.

Returns whether self‘s encoding is EUC-JP or not.

Case-insensitive version of String#<=>. Currently, case-insensitivity only works on characters A-Z/a-z, not all of Unicode. This is different from casecmp?.

"abcdef".casecmp("abcde")     #=> 1
"aBcDeF".casecmp("abcdef")    #=> 0
"abcdef".casecmp("abcdefg")   #=> -1
"abcdef".casecmp("ABCDEF")    #=> 0

Returns true if str and other_other_str are equal after Unicode case folding, false if they are not equal, and nil if other_str is not a string.

"abcdef".casecmp?("abcde")     #=> false
"aBcDeF".casecmp?("abcdef")    #=> true
"abcdef".casecmp?("abcdefg")   #=> false
"abcdef".casecmp?("ABCDEF")    #=> true
"\u{e4 f6 fc}".casecmp?("\u{c4 d6 dc}") #=> true

Returns true if str has a length of zero.

"hello".empty?   #=> false
" ".empty?       #=> false
"".empty?        #=> true

Iterates through successive values, starting at str and ending at other_str inclusive, passing each value in turn to the block. The String#succ method is used to generate each value. If optional second argument exclusive is omitted or is false, the last value will be included; otherwise it will be excluded.

If no block is given, an enumerator is returned instead.

"a8".upto("b6") {|s| print s, ' ' }
for s in "a8".."b6"
  print s, ' '
end

produces:

a8 a9 b0 b1 b2 b3 b4 b5 b6
a8 a9 b0 b1 b2 b3 b4 b5 b6

If str and other_str contains only ascii numeric characters, both are recognized as decimal numbers. In addition, the width of string (e.g. leading zeros) is handled appropriately.

"9".upto("11").to_a   #=> ["9", "10", "11"]
"25".upto("5").to_a   #=> []
"07".upto("11").to_a  #=> ["07", "08", "09", "10", "11"]