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Tham khảo tài liệu 'handbooks professional java-c-scrip-sql part 240', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Bitwise operations AND OR XOR and inversion. i int i int i A int i int i int Bitwise left shift and right shift. i n Returns the value of the nth bit from the least significant bit which is i 0 . 5 0 1 5 1 0 5 2 1. i.chr Returns a string containing the character for the character code i. 65.chr A a.chr a i.downto min i . Invokes the block decrementing each time from i to min. 3.downto 1 i puts i prints 3 2 1 i.next i.succ Returns the next integer following i. Equivalent to i 1. i.size Returns the number of bytes in the machine representation of i. i.step upto step i . Iterates the block from i to upto incrementing by step each time. 10.step 5 -2 i puts i prints 10 8 6 i.succ See i.next i.times i . Iterates the block i times. 3.times i puts i prints 0 1 2 . i.to_f Converts i into a floating point number. Float conversion may lose precision information. 1234567891234567.to_f 1.234567891e 15 i.to_int Returns i itself. Every object that has to_int method is treated as if it s an integer. i.upto max i . Invokes the block incrementing each time from i to max. 1.upto 3 i puts i prints 1 2 3 Fixnum Fixed-length number class Fixnum objects are fixed-length numbers with a bit length of either 31 bits or 63 bits. If an operation exceeds this range it s automatically converted to a Bignum. Inherited Class Integer Bignum Infinite-length integer class Bignum objects are infinite-length integers capable of handling numbers as large as memory can hold. Conversions between Fixnum and Bignum integers are performed automatically. Inherited Class .
