-1
likedict={linux:3,web:2}
likedict[:linux]++
likedict[:linux]
# => 6 
likedict[:web]
# => 2

I figured out that likedict[:linux]+=1 is what I want. This is my test case. I expected likedict[:linux] to become 4 after I do likedict[:linux]++, but it is 6. Why is that?

sawa
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BufBills
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    what you have done is `likedict[:linux] + likedict[:linux]` ruby does not support `++` use `+= 1` if you need to increment – bjhaid Feb 11 '14 at 23:50

1 Answers1

5

In Ruby there is no ++ operation.

If you look carefully after you do likedict[:linux]++ it still expects more for your statement, and then you entered likedict[:linux], so 3 + 3 = 6.

the Tin Man
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sonnyhe2002
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