Sams Teach Yourself Ruby in 21 Days

Appendix A. irb Results

Here's a transcript of the irb session described near the end of Day 1.

irb(main):001:0> 99 < 100
					true
irb(main):002:0> 99 <= 100
					true
irb(main):003:0> 100 <= 100
					true
irb(main):004:0> 100 == 100
					true
irb(main):005:0> 100 = 100
SyntaxError: compile error
(irb):5: parse error
100 = 100
     ^
        from (irb):5
irb(main):006:0> perfect_score = 100
					100
irb(main):007:0> "99" < 100
TypeError: failed to convert Fixnum into String
        from (irb):7:in `<=>'
        from (irb):7:in `<'
        from (irb):7
irb(main):008:0> "99".type
					String
irb(main):009:0> 100.type
					Fixnum
irb(main):010:0> "99".length
					2
irb(main):011:0> 100.length
NameError: undefined method `length' for 100:Fixnum
        from (irb):11
irb(main):012:0> "99" < "100"
					false
irb(main):013:0> "99" > "100" ...