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October 4, 2017 16:18
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Ruby Double Splat is a bit like Javascript Spread
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| a = { a: "a" } | |
| b = { b: "b" } | |
| { **a, **b } | |
| #=> {:a=>"a", :b=>"b"} | |
| { z: "z", **a, **b } | |
| #=> {:z=>"z", :a=>"a", :b=>"b"} | |
| { a: "AAA", **a, **b } | |
| #=> {:a=>"a", :b=>"b"} | |
| { **a, **b, a: "AAA" } | |
| #=> {:a=>"AAA", :b=>"b"} | |
| # Compare to how I may have done merges before... | |
| merged1 = a.merge(b) | |
| merged2 = { **a, **b } |
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