puts 6/2print 6/1puts 'hello world'puts '我們都是'/'中國人'  

36hello world我們都是中國人 

a=1b=1.0c=1.0d=1.0e=cputs(a==b)#值相等puts(a.eql?(b)) #值相等，類型相等puts(c.equal?(d))#值相等，內存地址相等puts(c.equal?(e))  

truefalsefalsetrue  

puts("abd" <=> "acd")puts((0..5) === 10)puts((0..5) === 3.2) 

-1falsetrue 

x=3case xwhen 1..2print "x=",x,",在1..2中"when 4..9,0print "x=",x,",在4..9,0中"elseprint "x=",x,",其它可能"end輸出結果:x=3,其它可能 

a=1while( a < 10 )print(a," ")a=a+1endb=1until( b >= 10 )print(b," ")b=b+1end輸出結果為:1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 

3.times{print "hi"}1.upto(9){|i| print i if i<7>#|i|可以看成是一個臨時的引用變量，供后面使用9.downto(1){|i| print i if i<7>(1..9).each{|i| print i if i<7>0.step(11,3){|i| print i}運行結果:hihihi123456654321123456036