Created
August 27, 2014 18:54
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|= compound assignment example
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| irb(main):013:0> a = [] | |
| => [] | |
| irb(main):014:0> a |= [1] | |
| => [1] | |
| irb(main):015:0> a |= [1] | |
| => [1] | |
| irb(main):016:0> a | |
| => [1] | |
| irb(main):017:0> a |= [2] | |
| => [1, 2] | |
| irb(main):018:0> a | |
| => [1, 2] |
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